Visualizzazione Stampabile
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K-L
KAR
MIDI file (text+MIDI) (Karaoke)
KB
Keyboard script (Borland C++ 4.5)
KB
Program source code (Knowledge Pro)
KBD
Keyboard mapping script (Procomm Plus, LocoScript, Signature)
KBM
Keyboard mapping script (Reflection 4.0)
KCL
Lisp source code (Kyoto Common Lisp)
KDC
Image (Kodak Photo-Enhancer)
KEX
Macro (KEDIT)
KEY
Icon toolbar (DataCAD)
KEY
Datafile (Forecast Pro)
KEY
Keyboard Macro
KEY
Security file (Such as a software registration number)
KFX
Image (KoFax Group 4)
KIZ
Digital postcard (Kodak)
KKW
Contains all K-keywords in the RoboHELP Help project Index Designer not associated with topics
KMP
KeyMaP (Korg Trinity)
KPP
Toolpad (SmartPad)
KPS
Bitmap graphic (IBM KIPS)
KQP
Native Camera file (Konica)
KR1
Sample (multi-floppy) file (Kurzweil 2000)
KRZ
Sample file (Kurzweil 2000)
KSF
Sample File (Korg Trinity)
KYB
Keyboard mapping (FTP)
KYE
Game data (Kye)
K25
Sample file (Kurzweil 2500)
L
Source code (Lex)
L
Source code (Lisp)
L
Linker directive file (WATCOM wlink)
LAB
Datafile (NCSS-SOLO)
LAB
Label file (Visual dBase)
LAB
Mailing labels (Microsoft Excel)
LAN
Loadable module (LAN DLL) (NetWare)
LAY
Word Chart layout (APPLAUSE)
LAY
Clipart file (Printmaster Gold)
LBG
Label generator data (dBase IV)
LBL
Label (dBase IV)
LBL
Label (Clipper 5)
LBL
Label (dBFast)
LBM
Bitmap (DeluxePaint)
LBM
Linear Bitmap graphics (XLib)
LBO
Compiled label (dBase IV)
LBR
Compressed archive (LU)
LBR
Display driver (Lotus 1-2-3)
LBT
Labels (Microsoft FoxPro)
LBX
Labels (Microsoft FoxPro)
LCF
Linker control file (Norton Guides compiler)
LCH
Used in a program (unknown) that monitors a network's response time
LCK
Lockfile (Paradox)
LCL
Datafile (FTP)
LCN
Lection document (Microsoft WordPerfect for Windows)
LCS
Data History file (ACT!)
LCW
Spreadsheet (Lucid 3-D)
LD
Long distance area codes file (Telix)
LD1
Overlay file (dBase)
LDB
Lock file (Microsoft Access)
LDF
Library definition file (Geoworks Glue)
LDIF
Structured text file used for sharing information between E-Mail clients (Microsoft, Netscape and others)
LDL
Library (Corel Paradox)
LEG
Legacy document
LES
System game profiles (same as REG file) (Logitec Entertainment)
LEV
Level file (NetHack 3.x)
LEX
Dictionary file (Generic)
LFD
Data resource file (LucasArts Dark Forces)
LFP
LaserForms Plus file (Evergreen)
LFT
Loft file (3-D Studios) (DOS)
LFT
Laser printer font (ChiWriter)
LG
Logo procedure definition (LSRHS Logo)
LGC
Application log file
LGD
Application log file
LGO
Logo file (PaintBrush)
LGO
Header and footer logo (SuperFax)
LGO
Startup logo (Microsoft Windows 3.x-9.x)
LHA
Alternate file suffix for LZH
LHA
Compressed Archive (LHA/LHARC)
LHW
Compressed Amiga archive (LHWARP)
LIB
Library file (Generic)
LIF
Logical Interchange data (Hewlett-Packard)
LIF
Compressed archive (Generic)
LIM
Compressed archive (LIMIT)
LIN
Line type file (DataCad)
LIN
Interactive music sequencing data file (Electronic Arts)
LIS
Output file produced by a Structured Query Reporting (SQR) program
LIS
Listing (VAX)
LIX
Logos library system file
LJ
Text file (Hewlett-Packard LaseJet II printer)
LK
Database file (OpenSight-16 bit)
LKO
Linked object (Microsoft Outlook Express Junkmail file)
LL3
Document file (LapLink III)
LLX
Exchange agent (Laplink)
LNK
Shortcut file (Microsoft Windows 9.x)
LNK
Linker response file (RTLink)
LNK
Datafile (Revelation)
LOD
Load file (Generic)
LOG
Log file (Generic)
LOK
Compressed file (FileWrangler)
LP
A document reader used for downloading mortgage closing information (DesertDocs)
LPC
Printer driver (TEKO)
LPD
Helix Nuts and Bolts file
LPI
Information file for laser printers (common with some scanning sofware)
LRC
Video phone file (Intel)
LRF
Linker response file (Microsoft C/C++)
LRS
Language resource file (Microsoft WordPerfect for Windows)
LSF
Logos library system file
LSL
Saved library (Corel Paradox)
LSL
Script library (Lotus)
LSP
AutoLISP, CommonLISP, and other LISP language files
LSS
Spreadsheet (Legato)
LST
List file (Generic)
LST
Keyboard macro (1st Reader)
LST
Spool file (Oracle)
LTM
Form (Lotus Forms)
LU
Library unit file (ThoughtWing)
LVL
Miner Descent/D2 Level extension (Parallax Software)
LWD
Text document (LotusWorks)
LWF
Wavelet graphics file (Luratech)
LWLO
Layered Object file (Lightwave)
LWOB
Object file (Lightwave)
LWP
Wordpro 96/97 file (Lotus)
LWSC
Scene file (Lightwave)
LWZ
Linguistically enhanced sound file (Microsoft)
LYR
Layer file (DataCAD)
LZD
Difference file for binaries (Ldiff 1.20)
LZH
Compressed archive (LH ARC)
LZS
Compressed archive (LARC)
LZS
Data file (Skyroads)
LZW
Compressed Amiga archive (LHWARP)
LZX
Compressed archive (Generic)
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M-N
M
Program file (Matlab)
M
Macro module (Brief)
M
Standard package (Mathematica)
M11
Text file (MASS11)
M1V
MPEG-related file (MIME type 'mpeg')
M3
source code file (Modula 3)
M3D
3D animation (Corel Motion)
M3U
MPEG URL (MIME audio file) (MP3 Playlist)
M4
M4 Preprocessor file (Unix)
M_U
Hard Drive Boot sector backup (MazeGold)
MA3
Macro (Harvard Graphics 3.0)
MAC
Image (MacPaint)
MAC
Macro (Generic)
MAD
Module (Microsoft Access)
MAF
Form (Microsoft Access)
MAG
A graphics format found in some Japanese files
MAG
MAG graphics format created by Woody Lynn (MPS Magro Paint System)
MAGIC
Configuration file (Magic Mail Monitor)
MAI
Mail (VAX)
MAK
Project (Visual Basic or Microsoft C++)
MAK
Makefile (Generic)
MAM
Macro (Microsoft Access)
MAN
Manual page output (Unix)
MAN
Command module (Unix)
MAP
Map file (Generic)
MAP
WAD game file (Duke Nukem 3D)
MAP
Color pallette (Generic)
MAP
Format data (Micrografx Picture Publisher)
MAP
Linker map file
MAP
Map file used for color choices (Pro/Engineer)
MAP
Map file (Atlas MapMaker)
MAP
Network map (AccView)
MAQ
Query (Microsoft Access)
MAR
Report (Microsoft Access)
MAR
Assembly program (VAX Macro)
MAS
Graphics file (Lotus Freelance Smartmaster)
MAT
Binary file (Matlab)
MAT
Table (Microsoft Access)
MAUD
Sample format (Maud)
MAX
3D scene (Kinetix 3D Studio Max)
MAX
Document (Paperport)
MAX
Layout file (OrCad)
MAX
Source code (MAX)
MAZ
Maze data file (Hover)
MAZ
A format use by Division's dVS/dVISE
MB
Memo field values for database (Paradox)
MB1
Data file (Apogee Monster Bash)
MBK
Multiple index archive (dBase IV)
MBOX
Mailbox file (Berkeley Unix)
MBX
Extension Microsoft Outlook adds to saved email, Eudora mailboxes
MCC
Calling card (Dialer10)
MCC
Configuration file (MathCad)
MCD
Document (MathCad)
MCF
Font file (MathCad)
MCF
Magic control file
MCI
Command script (Media Control Interface)
MCP
Project file (Metrowerks CodeWarrior)
MCP
Application script (Capsule)
MCP
Printer driver (MathCad)
MCR
Keyboard macro file (DataCad)
MCW
Document (Microsoft Word for Macintosh)
MCW
Text document (MacWrite II)
MD
Compressed archive (MDCD)
MDA
Add-in file (Microsoft Access)
MDA
Workgroup (Microsoft Access version 2)
MDB
Database (Microsoft Access)
MDE
MDE file (Microsoft Access)
MDL
Spreadsheet (CA-Compete!)
MDL
Music module (MOD) (Digital Trakker)
MDL
Model (3D Design Plus)
MDL
Model file (Quake)
MDL
Model file element (Rational Rose)
MDM
Modem definition (Telix)
MDN
Blank database template (Microsoft Access)
MDT
Data table (Microsoft ILink incremental linker)
MDT
Add-in file (Data) (Microsoft Access)
MDW
Workgroup (Microsoft Access)
MDX
Multiple index file (dBase IV)
MDZ
Wizard template (Microsoft Access)
ME
ASCII text document (Generic)
MEB
Macro editor bottom overflow library (Microsoft WordPerfect for Windows)
MED
Music module (MOD) (OctaMed Music Editor)
MED
Macro editor delete save file (Microsoft WordPerfect for Windows)
MEM
Macro editor macro (Microsoft WordPerfect for Windows)
MEM
Memory variable save file (Clipper)
MEM
Memory variable save file (dBase IV)
MEM
Memory variable save file (Microsoft FoxPro)
MEQ
Macro editor print queue file (Microsoft WordPerfect for Windows Library)
MER
Format for interchanging spreadsheet/database data; recognized by Filemaker, Excel, and others
MER
Macro editor resident area (Microsoft WordPerfect for Windows Library)
MES
Macro editor workspace file (Microsoft WordPerfect for Windows)
MES
Message file (Generic)
MET
Presentation Manager metafile
MET
Macro editor top overflow file (Microsoft WordPerfect for Windows Library)
MET
Document file (OmniPage Pro)
MEU
Menu group (DOS Shell)
MEX
Executable command (Matlab)
MEX
Macro editor expound file (Microsoft WordPerfect for Windows)
MF
Metafont text file
MFG
Manufacturing file (Pro/ENGINEER)
MGF
Font file (MicroGrafx)
MGF
A file in a Materials and Geometry Format
MHT
MHTML document (Microsoft)
MHTM
MHTML document (MIME)
MHTML
MHTML document (MIME)
MI
Data file (Cocreate ME10)
MI
Miscellaneous file (Generic)
MIC
Image Composer file (Microsoft)
MID
MIDI music
MIF
Interchange format (Adobe FramMaker)
MIFF
Machine Independent File (Generic)
MII
Datafile (MicroStat-II)
MIM
A multipart file in the Multi-Purpose Internet Mail Extensions (MIME) format; often created as the result of sending e-mail with attachments in AOL. The files in a multipart MIM file can be "opened" (unarchived and separated into individual files) using Winzip or a similar program.
MIME
See MIM.
MIX
Object file (Power C)
MIX
Picture file (Microsoft PhotoDraw 2000)
MIX
Picture file (Microsoft Picture-It!)
MIX
Package file (Command & Conquer)
MIX
Resource archive (Westwood Studios)
MJF
Audio file similar to MP3 (Mjuice) (Opens with WinAmp)
MK
Makefile (Generic)
MKE
Makefile (Microsoft Windows SDK)
MKI
Graphic Image (MagView 5.0) (Japanese)
MKS
Datafile (TACT)
ML3
Project file (Milestones 3.x)
MLB
Macro library (Symphony)
MLI
A file in 3D Studio's Material-Library format
MLID
Muliple link interface driver file (Generic)
MLM
Groupwise email file (Novell Groupwise)
MM
Text file (MultiMate Advantage II)
MMC
Catalog file (Microsoft Clip Gallery 5.x)
MMF
Mail message file (Microsoft Mail)
MME
A multipart file in the Multi-Purpose Internet Mail Extensions (MIME) format; often created as the result of sending e-mail with attachments in AOL. The files in a multipart MME file can be "opened" (unarchived and separated into individual files) using Winzip or a similar program.
MMF
Meal Master Format, a recipe catologing format
MMF
Mail file (Microsoft)
MMG
Beyond 20/20 table or aggregate data file
MML
Bulk mail file (Created by MyMailList)
MMM
Multimedia movie (Microsoft)
MMM
Multimedia movie (MacroMind Director 3.x)
MMO
Memo Writer file (RapidFile)
MMP
MindManager file (MindMapor)
MMP
Output video (Bravado)
MN2
Mission file (Descent2)
MN3
Mission file (Descent3)
MND
Menu source (AutoCAD Menu Compiler)
MND, MNI
Mandelbrot for Windows
MNG
Map (DeLorme Map'n'Go)
MNG
Multi-image Network Graphics
MNT
Menu file (Microsoft FoxPro)
MNU
Menu file (Visual dBase)
MNU
Advanced macro (HP NewWave)
MNU
Interact menu (Intertal Systems)
MNU
Menu (AutoCAD Menu Compiler)
MNU
Menu (Norton Commander)
MNX
Menu (Microsoft FoxPro)
MNX
Compiled menu (AutoCAD)
MNY
Account book (Microsoft Money)
MOB
Device definition (PEN for Windows)
MOD
FastTracker, StarTrekker, Noise Tracker (etc.) music module file
MOD
Spreadsheet (Microsoft Multiplan)
MOD
Modula-2 source code file (Clarion Modula-2)
MOD
Kernel module (Microsoft Windows 9.x)
MOD
Amiga/PC tracker module
MON
Monitor description (ReadMail)
MOV
Movie (QuickTime for Microsoft Windows)
MOV
Movie (AutoCAD/AutoFlix)
MOZ
Zipped (Compressed) mod file
MP2
MPEG Audio Layer 2
MP3
MPEG Audio Layer 3 (AC3)
MPA
MPEG-related file (MIME type 'mpeg')
MPC
Calendar file (Microsoft Project)
MPD
Database file (Microsoft Project)
MPE
MPEG animation
MPEG
MPEG animation
MPG
MPEG animation
MPM
Mathplan Macro library (Microsoft WordPerfect for Windows)
MPP
Project file (Microsoft Project)
MPP
Drawing file (CAD)
MPR
Menus (compiled) (Microsoft FoxPro)
MPT
Bitmap graphics (Multipage TIFF)
MPV
View file (Microsoft Project)
MPX
Compiled menu program (Microsoft FoxPro)
MPX
Exchange file (Microsoft Project) used for exporting data
MP2
MPEG Audio Layer 2 file (MIME video file)
MP3
MPEG Audio Layer 3 (AC3) file
MRB
Multiple resolution bitmap graphics (Microsoft C/C++)
MRI
MRI Scan
MRS
Macro resource file (Microsoft WordPerfect for Windows)
MSA
Archive (Magic Shadow)
MSC
Makefile (Microsoft C)
MSC
Common console document (Microsoft Windows 2000)
MSD
Diagnostics report file (Microsoft MSD) (Diagnostics)
MSDL
Scene Description Language (Manchester)
MSG
Mail message (Microsoft)
MSI
Installer package (Microsoft Windows)
MSN
Network document (Microsoft)
MSN
Mission File (Descent)
MSP
Paint bitmap (Microsoft)
MSP
Windows Installer patch file
MSS
Manuscript text file (Perfect Writer)
MSS
Manuscript text file (Scribble)
MSS
Manuscript text file (MINCE)
MSS
Manuscript text file (Jove)
MST
Windows Installer transform
MST
Minispecification file (Prosa)
MST
Setup script (Microsoft SDK)
MSW
Text file (Microsoft Word)
MSX
Compressed CP/M archive (MSX)
MTH
Math file (Derive)
MTM
Music module (MOD) (Multitracker)
MTW
Datafile (Minitab)
MTX
Twain device driver (32 bit)(UMax)
MU
Menu (Quattro Pro)
MUL
Online game called Ultima online
MUS
Music (Generic)
MUS
Interactive music audio data file (Electronic Arts)
MUS
Music (MusicTime)
MUS10
Audio (Mus10)
MV
Server-side script file (Miva)
MVA
Video accelerator file (Matrox)
MVB
Multimedia Viewer file (Microsoft)
MVC
Image file (Sony Digital Mavica)
MVE
Interplay video file (Descent2, Fallout2)
MVF
Stop frame file (AutoCAD-AutoFlix)
MVI
Movie command file (AutoCAD-AutoFlix)
MVW
Log file (Saber LAN)
MWF
Animation (ProMotion)
MWP
Smartmaster file (Lotus WordPro 97)
MXD
Map file (ArcInfo)
MXT
Datafile (Microsoft C)
MYP
Presentation file (Make Your Point)
NAN
Nanoscope files (Raw Grayscale)
NAP
Metafile (NAP)
NAP
Video file (EnerGraphics)
NB
Text file (Nota Bene)
NC
Instructions for numerical control machine (CAMS)
NCB
Developer Studio file (Microsoft)
NCC
CNC (Computer Numeric Control) file (CamView 3D)
NCD
Change directory (Norton)
NCF
Command File (Netware)
NCF
Internal clipboard (Lotus Notes)
NDB
Network database (Intellicom)
NDO
3D low-polygon modeler (Nendo)
NDX
Index file (dBase II-III-IV)
NDX
Database file (1ACT! for Microsoft Windows)
NDX
Index file (Cindex)
NEO
Raster graphics (Atari Neochrome)
NES
Emulator ROMS for game console (Nintendo)
NET
Network configuration file
NET
Netlist output file (Orcad Schematic Capture)
netCDF
Network Common Data Form
NEW
New info
NEZ
Emulator file used for game consoles (NES)
NFF
Neutral File Format
NFO
Info file database text
NFO
Infobase file (Folio)
NFT
Template file (Netobject Fusion)
NG
Online documentation database (Norton Guide)
NIL
Icon Library file (EasyIcons-compatible) (Norton)
NIST
Audio (NIST Sphere)
NLB
Data (Oracle 7)
NLM
Loadable Module (Netware)
NLS
National Language Support file used for localization (for example, by Uniscape)
NLU
E-Mail Trigger file (Norton LiveUpdate)
NLX
Form (FormWorx 3.0)
NOD
File (Netobject Fusion)
NP
Project schedule (Nokia Planner)
NP
Project schedule (Visual Planner 3.x)
NPI
Source for interpreter (dBase Application Generator)
NRF
Data file (NICOLET)
NRG
Image file (Nero)
NSF
Database (Lotus Notes)
NSO
Document file (NetObject Fusion)
NST
Music module (MOD) (Noise Tracker)
NS2
Database (Lotus Notes version 2)
NS3
Database (Lotus Notes version 3)
NS4
Database (Lotus Notes version 4)
NT
Startup files (Microsoft Windows NT)
NTF
Database template (Lotus Notes)
NTR
Executable ASCII text file
NTS
Tutorial (Norton)
NTS
Executable ASCII text file
NTX
Index file (CA-Clipper)
NUF
Message for new users (1st call) (Procomm Plus)
NWC
Song file (Noteworthy Composer)
NWS
News message (MIME RFC822) (Microsoft Outlook Express)
NXT
Sound file (NeXT)
-
O-P
O
Object file (Unix)
O
Object file (Atari)
O
Object file (GCC)
OAS
Word processor document (Fujitsu OAS)(Japanese)
OAZ
Fax (NetFax Manager)
OB
Object cut/paste file (IBM LinkWay)
OBD
Binder template (Microsoft Office)
OBD
Binder (Microsoft Office)
OBJ
Object file
OBR
Object browser data file (Borland C++)
OBS
Script (ObjectScript)
OBV
Visual interface (ObjectScript)
OBZ
Binder Wizard (Microsoft Office)
OCF
Object craft file (Object Craft)
OCR
Transcribed fax-to-text file (FAXGrabber)
OLE
Object Linking and Embedding (OLE) custom control (Microsoft)
ODL
Type library source (Visual C++)
ODS
Mailbox file (Microsoft Outlook Express)
OFD
Form definition (ObjectView)
OFF
Object File (3D Mesh)
OFN
FileNew file (Microsoft Office)
OFT
Template (Microsoft Outlook)
OKR
Feldeinteilung module file (3-D Fassade Plus)
OKT
Music module (MOD) (Oktalyzer)
OLB
Object Library (OLE) (Microsoft)
OLB
Object library (VAX)
OLD
Backup file (Generic)
OLE
OLE object
OLI
Text file (Olivetti)
OO1
Voice file (Typhoon)
OOGL
Object Oriented Graphics Library
OOM
Swap file (Shroom)
OPJ
Project file (Orcad Schematic Capture)
OPL
Organiser Programming Language source file (Psion/Symbian)
OPN
Active options (Exact)
OPO
Output executable file (OPL)
OPT
Developer Studio file (Microsoft)
OPT
Optimize support file (QEMM)
OPW
Organization chart (Org Plus for Windows)
OPX
Extension DLL (OPL)
OPX
Inactive options (Exact)
ORA
Parameter file (Oracle)
ORC
Script (Oracle 7)
ORG
Calendar file (Lotus Organizer)
OR2
Calendar file (Lotus Organizer 2)
OR3
Lotus Organizer 97 file
ORA
Configuration file (Oracle 7)
OSS
Search file (Microsoft Office)
OST
Offline file (Microsoft Exchange/Outlook)
OTL
Outline font description (Z-Soft Type Foundry)
OTL
Template file (Super NoteTab) (Fookes)
OTL
Template file (PrintMaster Gold)
OTX
Text file (Olivetti Olitext Plus)
OUT
Output file (Microsoft C)
OV
Database file (Revelation-DOS)
OV1
Overlay file
OV2
Overlay file
OVD
Datafile (ObjectVision)
OVL
Overlay file
OVR
Overlay file
O$$
Outfile (Sprint)
P
Source code (Pascal)
P
Application parameter file (ReaGeniX code generator)
P
Picture file (APPLAUSE)
PA1
Worktable (PageAhead)
PAB
Personal Address Book (Microsoft)
PAC
Package file (Sound Blaster Studio II)
PAC
Image (Stad)
PAD
Keypad definition (Telemate)
PAK
Compressed archive (PAK)
PAK
WAD file (Quake)
PAL
A compressed file (Generic)
PAL
Color palette (Microsoft)
PAN
Printer specific file (CorelDRAW)
PAQ
Password encrypted zip file (Hewlett-Packard)
PAR
Parts application (Digitalk PARTS)
PAR
Parameter file (Fractint)
PAR
Permanent output file (Microsoft Windows 3.x)
PAS
Source code file (Borland Pascal)
PAT
Hatch pattern file (DataCAD)
PAT
Pattern file (CorelDRAW)
PAT
Patch file (Advanced Gravis Ultrasound/Forte Technologies)
PAT
exePatch utility used for Warcraft2 (WarHack)
PB
Fax (FAXability Plus)
PB
Phone book (WinFax Pro)
PB
Setup file (PixBase)
PB1
Document (First Publisher for Windows)
PBA
Source code file (Powerbasic BASIC) (Genus)
PBD
Phone book (FaxNOW!-Faxit)
PBD
Dynamic library, an alternative to a native DLL (PowerBuilder)
PBF
Turtle Beach Pinnacle Bank File
PBI
Include file (PowerBasic) (Genus)
PBI
Profiler binary input file (Microsoft Source Profiler)
PBK
Microsoft Phonebook
PBL
Library file used in a development environment (PowerBuilder)
PBL
PowerBasic library (Genus)
PBM
Portable bitmap graphic
PBM
Planar bitmap graphic (XLib)
PBO
Profiler binary output (Microsoft Source Profiler)
PBR
Resource file (PowerBuilder)
PBT
Profiler binary table (Microsoft Source Profiler)
PC
Text file (IBM)
PC3
Custom palette (Harvard Graphics 3.0)
PC8
Ascii text IBM8 character set (NewWave Write)
PCB
Application data file (Microsoft Powerpoint)
PCC
Cutout picture vector graphics (PC Paintbrush)
PCD
Image (Kodak Photo-CD)
PCD
P-Code compiled test scripts as in Microsoft Test and Microsoft Visual Test
PCE
Maps Eudora mailbox names to DOS filenames
PCF
Profiler command file (Microsoft Source Profiler)
PCH
Patch file (Generic)
PCH
Precompiled header file (Microsoft C/C++)
PCI
PCI Miniport file (Microsoft Windows System file)
PCJ
Multimedia authoring tool graphics (IBM Linkaway-Live)
PCK
Pickfile (Turbo Pascal)
PCL
Printer Control Language file (printer-ready bitmap) (Hewlett-Packard)
PCM
Audio file
PCM
PCM file (OKI MSM6376 Sythesizer Chip)
PCP
Live Update Pro file (Symantec)
PCS
Animation (PICS)
PCS
Picture storage file (Microsoft)
PCT
PICT drawing (Macintosh)
PCW
Text file (PC Write)
PCX
PC Paintbrush bitmap (ZSoft)
PDA
Bitmap graphics
PDB
Data file (TACT)
PDB
Physical model backup file (PowerDesigner)
PDB
Database file (3Com PalmPilot)
PDD
Graphic image that can be opened with Paint Shop Pro and Adobe PhotoDeluxe
PDF
Portable Document file (Adobe Acrobat) (displayable with a Web browser)
PDF
Definition File
PDF
Printer Definition File (Netware)
PDF
Graphics file (ED-SCAN 24bit)
PDL
Project description language file (Borland C/C++)
PDM
Physical model file (PowerDesigner)
PDP
Print Shop Deluxe file (Broderbund)
PDQ
Flowcharting PDQ Lite file (Patton&Patton)
PDS
Photographic image file (origin not yet identified)
PDS
Hardware assembly source code file (Pldasm)
PDT
Database file (ProCite)
PDV
Printer driver (Paintbrush)
PDW
Document (Professional Draw)
PDX
Database index file (ProCite)
PE3
Image archive file (Ulead PhotoImpact)
PE3
Image archive file (QuickViewer)
PE4
Image archive file (Ulead PhotoImpact v.4.0)
PEB
Program Editor bottom overflow file (Microsoft WordPerfect for Windows Library)
PED
Program Editor delete save file (Microsoft WordPerfect for Windows)
PEM
Program Editor macro (Microsoft WordPerfect for Windows library)
PEQ
Program Editor print queue file (Microsoft WordPerfect for Windows)
PER
Program Editor resident area file (Microsoft WordPerfect for Windows Library)
PES
Program Editor work space file (Microsoft WordPerfect for Windows Library)
PET
Program Editor top overflow file (Microsoft WordPerfect for Windows Library)
PF
Encrypted file (Alladin Systems)
PFA
Type 3 font (ASCII)
PFB
Type 1 font (binary)
PFC
PF Component file
PFC
Text file (First Choice)
PFC
Personal filing cabinet file (AOL)
PFF
Paraform file for 3D modeling (Scandata)
PFK
Programmable function keys (XTreePro)
PFM
Printer Font Metrics (Microsoft)
PFS
Database text file (PFS:Write)
PFT
Printer font (ChiWriter)
-
Q-R
QAD
Document (PF QuickArt)
QAG
Quick Access Group data file (Norton Desktop)
QAP
Application file (Omnis Quartz)
QBE
Saved query (dBase IV)
QBE
Saved Query (Quattro Pro)
QBO
Compiled query (dBase IV)
QBS
Program file (Microsoft QuickBasic)
QBW
Spreadsheet data (QuickBooks for Windows)
QCP
Voice file (Qualcomm Pure Voice)
QD0
Data file-segment 10 (Omnis Quartz)
QD1
Data file segment 1 (Omnis Quartz)
QD2
Data file segment 2 (Omnis Quartz)
QD3
Data file segment 3 (Omnis Quartz)
QD3D
QuickDraw 3D Metafile (Apple)
QD4
Data file segment 4 (Omnis Quartz)
QD5
Data file segment 5 (Omnis Quartz)
QD6
Data file segment 6 (Omnis Quartz)
QD7
Data file segmnet 7 (Omnis Quartz)
QD8
Data file segment 8 (Omnis Quartz)
QD9
Data file segment 9 (Omnis Quartz)
QDF
Data file (Quicken)
QDK
Backup of startup files (QEMM)
QDT
Data file from the Quicken UK Accountancy/Tax/Invoice program (QuickBooks)
QDV
Graphics file (Steve Blackstock Giffer)
QEF
Query file (Microsoft Excel)
QEL
Electronic library file (Quicken)
QFL
Document (FAMILY LAWYER)
QFX
Fax (QuickLink)
QIC
Backup file (Microsoft)
QIF
Image (MIME)(QuickTime)
QIF
Import file (Quicken)
QLB
Library file (Quick)
QLB
Library file (Microsoft C/C++)
QLC
Data (PostScript help file)
QLP
Printer driver (QuickLink)
QM
Motion file (Quality)
QM4
Option or services file (QMail 4.x Mail Door)
QPR
Generated query program (Microsoft FoxPro)
QPR
Print queue device driver (OS/2)
QPX
Compiled query program (Microsoft FoxPro)
QQT
Qardware definition file (Quick Qard Technology)
QRP
Report builder file (Centura)
QRP
Report file (Liberty for Windows 2.0)
QRS
Equation Editor support file (Microsoft WordPerfect for Windows)
QRT
QRT graphics file (Ray Tracer)
QRY
Query (Microsoft)
QRY
Query (dBase IV)
QSD
Datafile (Quicken)
QST
Tab file (Quake Spy)
QT
Movie file (QuickTime)
QTI
Image file (QuickTime)
QTIF
Image file (QuickTime)
QTM
Movie file (QuickTime)
QTP
Preferences file (QuickTime)
QTS
PICT image file (Macintosh)
QTS
Image file (QuickTime)
QTX
Image file (QuickTime)
QW
Write program file (Symantec Q&A)
QWK
Message file (QWK Reader)
QXD
Data file (Quark Xpress)
QXL
Element library (Quark Xpress)
QXT
Template file (Quark Xpress)
R
Ratfor file (FORTRAN Preprocessor)
R
Resource file (Pegasus Mail)
RA
Sound file (RealAudio)
RAD
Radar data file (Radar ViewPoint)
RAM
Metafile (RealAudio)
RAO
ReadAllOver (YOUniverse)
RAR
RAR compressed archive (Eugene Roshall's format)
RAS
Bitmap (Sun Raster Images)
RAT
Datafile (RATS)
RAW
Raw File Format (bitmap)
RAW
Raw signed PCM data
RAW
Raw signed PCM data
RBF
Datafile (Rbase)
RBH
Maintained by RoboHELP, the RBH file adds to the information contained in the Help project file
RC
Resource script (Micosoft C/C++)
RC
Resource script (Borland C++)
RC
Configuration file (emacs)
RCG
Newsgroup file (Netscape)
RD1
Registered level file (Descent1)
RDF
Resource Description Framework file (related to XML and metadata)
RDF
Compiled UIC source code (Geoworks UI Compiler)
RDF
Research document information format
RDI
Device-independent bitmap file
RDL
Registered Level file (Descent)
RDX
Datafile (Reflex)
REC
Datafile (EpiInfo)
REC
Recorded macro (Microsoft Windows 3.x)
REC
Voice file (RapidComm)
REC
Record file (Sprint)
RED
Path information file (Clarion Modula-2)
REF
Reference file (Generic)
REG
Registration file
REG
Registration file (Corel)
REG
OLE registration file (Microsoft Windows 3.x)
REM
Remarks file (Generic)
REP
Reply file (QWK Reader)
REP
Report file (Visual dBase)
REP
Report file (Report Designer)
REP
Report file (DataBoss)
REP
Report file (CodeReporter)
REQ
Request file (Generic)
RES
Resource file (Microsoft Visual C++)
RES
Compiled resource file (Borland C++)
RES
Resource file (dBase IV)
REV
Revision file (GeoWorks)
REX
Source code file (REXX)
REX
Report definition (Oracle)
REZ
Resource file (Generic)
RF
Raster graphics file (Sun)
RFT
Revisable Form Text (part of IBM's DCA or Document Content Architecture)
RGB, SGI
RGB files (Silicon Graphics)
RGX
Symbol tables (ReaGeniX code generator)
RH
Resource header file (Borland C++ 4.5)
RI
Data file (Lotus 1-2-3)
RIB
Graphics in Renderman format (3DReality)
RIC
Fax document (Ricoh)
RIF
RIFF bitmap graphics (Fractal Design Painter)
RIF
Image file (Metacreations Painter 5)
RIP
Graphics (remote access)
RIX
Bitmap graphics (ColorRIX VGA Paint)
RL1
Regestered level file (Descent1)
RL2
Registered level file (Descent2)
RL4
Bitmap graphics file
RL8
Bitmap graphics file
RLA
Wavefront raster image (SDSC Image Tool)
RLB
Data file (Harvard Graphics Win 9.x)
RLC
Graphics file (1 bit per pixel scanner output file)
RLE
Run-Length Encoded bitmap (SDSC Image Tool)
RLZ
Realizer source code file (CA-Realizer)
RM
Video file (RealAudio)
RMD
Document (Microsoft RegMaid)
RMF
Rich Map Format (used by 3-D game editors to store a map)
RMF
Rich music format (Beatnik)
RMI
MIDI music
RMK
Makefile (Clipper RMake)
RN
Xpl Program file (Nota Bene)
RND
Rendering slide (AutoCAD-AutoShade)
RNO
Runoff file (VAX)
ROL
FM music Adlib Music file (Roland)
ROM
Cartridge-based home video game emulator file (exact copy of ROM contents in cartridges from Atari 2600, Colecovision, Sega, Nintendo, etc.; not interchangeable between emulators)
ROV
Data file (Rescue Rover)
RPD
Database (RapidFire)
RPL
Text document (Replica)
RPL
Video file (Tomb Raider)
RPM
Package Manager (RedHat Linux)
RPT
Crystal Reports file ( and a sub-set of Microsoft Visual Basic)
RRS
Saved game file (Ace Road Rash)
RS
Datafile (Amiga Resource Reassembler)
RSB
Red Storm bitmap (Rainbow 6 (Game) and several image editing programs)
RSC
Resource file (Generic)
RSL
Paradox 7 reports (Broderland)
RSM
Resume file (WinWay Resume Writer)
RSP
Response file (Generic)
RS_
Resourse fork file (Macintosh Mac-ette)
RTF
Rich Text Format document
RTF
Help file script (Microsoft Windows 9.x)
RTL
Run Time library (NU 7.0)
RTM
Music module (MOD) (Real Tracker)
RTK
Used by RoboHELP to simulate the search feature of Windows help
RTL
Text file (Generic)
RTP
Software update package data file (RTpatch)
RTS
RTSL document (RealAudio)
RTS
Runtime library file (CA-Realizer)
RTS
RoboHELP to speed complex operations
RUL
Extension used in InstallShield
RUN
Compiled output p-code file (Softworks basic compiler) (SoftworksLtd)
RVP
Scan Configuration file (MIME) (Microsoft)
RVW
Review file (Generic)
RWS
Resource Workshop data file (Borland C++)
RWX
Script file (RenderWare)
RXX
RAR compressed files from a multi-volume archive (xx = a number from 01 to 99)
R8
Raw graphics (One byte per pixel) plane one (PicLab)
R8P
Pcl 4 bitmap font (Intellifont)
-
S
S
Assembler source code (Unix)
S
Source code file (Scheme)
SAI
Encrypted video file (Integrated Sensors)
SAL
Datafile (SORITEC)
SAM
Document (AMI Professional)
SAM
Signed 8bit sample data file
SAR
Compressed archive (SAR)
SAV
Saved game file (Generic)
SAV
Backup file (Generic)
SAV
Configuration file (Generic)
SB
Raw Signed Byte (8bit) audio data
SBD
Storyboard data file (Storyboard Editor)
SBD
Data definition file (Superbase)
SBF
File data (Superbase)
SBI
Instrument file (Creative Labs SoundBlaster)
SBK
Bank file (Soundblaster)/EMU SoundFont v1.x (Creative Labs Soundfont 1.0)
SBL
Flash object (ShockWave)
SBP
Dml program file (Superbase 4)
SBP
Program file (Superbase)
SBQ
Query definition file (Superbase)
SBR
Support file (Source Browser)
SBT
Notes related to record data (Superbase 4 for Windows)
SBV
Form definition file (Superbase)
SB!
Locking file (Superbase)
SC
Pal script (Paradox)
SC
Display driver (Framework II)
SC2
Schedule+ 7.0 file (Microsoft)
SC2
SAS catalog (Windows 95/NT, OS/2, Mac)
SC3
Saved game file (SIMM City 3000)
SC3
Renamed dBase III screen mask file (dBase IV)
SC3
Screen device driver (Harvard Graphics 3.0)
SC4
Level file (Roller Coaster Tycoon)
SCA
Datafile (SCA)
SCC
Source Safe file (Microsoft)
SCC
Text file (Generic)
SCD
Slide image (Matrix/Imapro SCODL)
SCD
Object description language graphics (Scodl Scan Conversion)
SCD
Datafile (Microsoft Schedule+ 7.0)
SCF
Command file (Microsoft Windows Explorer)
SCF
Multimedia show (ScoreMaker)
SCF
Spell checker configuration file (Symphony)
SCH
Datafile (Microsoft Schedule+ 7.0)
SCH
Schematics file (ORCAD)
SCI
Inspire native format (ScanVec)
SCI
System configuration information file (Generic)
SCI
Fax document (SciFAX)
SCM
Scheme source code file (Generic)
SCM
Video game console ROM emulater file
SCN
Scene data file (TrueSpace2)
SCN
Screen file (Kermit)
SCO
High score file (Generic game file)
SCP
Dial-Up Networking Script
SCP
Script file (BITCOM)
SCR
Screensaver file (Microsoft Windows 9.x)
SCR
Fax image (Generic)
SCR
Debug source code (DOS Debug)
SCR
Screen snapshot file (dBase IV)
SCR
Screen snapshot file (Procomm Plus)
SCR
Screen font file (LocoScript)
SCT
SAS catalog (Dos)
SCT
CT bitmap (Scitex)
SCT
FoxPro forms (Microsoft)
SCT01
SAS catalog (Unix)
SCV
CASmate Native format (ScanVec)
SCX
FoxPro forms (Microsoft)
SCX
Bitmap graphics (ColorRIX)
SCX
Chart (Stanford Chart)
SCX
Screen file (Microsoft FoxPro)
SCY
Security file (ReaGeniX)
SD
Audio (Sound Designer I)
SD2
Flattened file/data fork (Sound Designer II)
SD2
SAS database (Windows 95/NT OS/2, Mac)
SDA
File archive description (Fidonet Software Distribution Network)
SDC
Spreadsheet (Staroffice)(StarCalc)
SDD
Presentation file (Staroffice)(Starimpress)
SDF
System Data File Format - legacy Unisys (Sperry) format
SDI
Software distribution network information file
SDK
Floppy disk image (Roland)
SDL
Library file (SmartDraw)
SDN
Software distribution network compressed archive
SDP
Datafile (Cocreate SolidDesigner)
SDPC
Datafile (Cocreate SolidDesigner)
SDR
Drawing (SmartDraw)
SDS
Raw Midi Sample Dump Standard file
SDT
Template (SmartDraw)
SDV
Semicolon Divided Values file
SDW
Graphic file (Lotus WordPro)
SDW
Raw Signed DWord (32bit) data
SDX
Midi Sample Dump Standard files compacted by SDX
SEA
Self-expanding archive (used by Stuffit for Mac files and possibly by others)
SEC
Secret key ring file (PGP)
SEC
Secured animation file (Disney Animation Studio)
SED
Screen editor script files (SED)
SEL
Data file (Copy Books)
SEP
Tagged Image File Format (TIFF) bitmap
SEP
Printer seperator page (Generic)
SEQ
Animation file (Atari)
SEQ
Sequential instruction file (Bubble Chamber)
SES
Session file (Cool Edit) (common digital audio editor file )
SES
Session information file (Clarion Modula-2)
SESSION
Internet Security Scanner file (ISS)
SET
Configuration file (1st Reader)
SET
Install driver sets (Symphony)
SET
Setup option file (Generic)
SET
Voice set files (Quartet)
SEW
Sewing program file (Generic)
SF
SoundFile format (IrCam)
SF
Wps attribute storage file (OS/2 WorkPlace Shell)
SF2
SoundFont file (EMU version 2.0)
SF2
Bank file (Creative Labs Soundfont 2.0)(Soundblaster)
SFD
Sound File Data (SoundStage)
SFI
Sound File Info (SoundStage)
SFI
Graphics file (SIS Framegrabber)
SFI
Printer font file (Hewlett-Packard Laser Jet Landscape)
SFI
Printer font file (Ventura Publisher)
SFK
Sound file (Sonic Foundry)
SFL
Pcl 4 bitmap font (LandScape)
SFL
Pcl 4 bitmap font (Ventura Publisher)
SFL
Pcl 4 bitmap font (Intellifont)
SFN
Font file (SPX)
SFP
Pcl bitmap font (Portrait)
SFP
Pcl bitmap font (Intellifont)
SFP
Pcl bitmap font (Ventura Publisher)
SFR
Sample Resource (Sonic Foundry)
SFS
Pcl 5 scalable font file (Intellifont)
SFT
Screen font (ChiWriter)
SFW
Mangled JPEG (Seattle Filmworks)
SFX
Self-extracting archive (RAR)
SG
Image file (SnapGraphix)
SG1
Graphics file (Stanford Graphics)
SGF
Document w/graphics (StarWriter)
SGF
Graphics file (Sonique)
SGI
Graphics file (IRIS)
SGI
Graphics file (Silicon Graphics)
SGML
Standard Generalized Markup Language
SGP
Statistics file (STATGRAPHICS Plus)
SGT
Save/Get keyboard macro (Signature)
SH
Shell script (Unix)
SH
ASCii archive (Unix/SHAR)
SH3
Presentaion file (Harvard Graphics)
SHB
Presentation (Corel Show)
SHB
Document shortcut file
SHG
Bitmap (HotSpot)
SHK
Compressed Apple archive (SHRINKIT)
SHK
Compressed archive (Arthurian Shrink Archiver)
SHM
Shell macro (Microsoft WordPerfect for Windows Library)
SHN
Audio compression file (Shorten)
SHP
DOS shapes file (3D Studios)
SHP
File format used by some programs for 3D modeling of multipart interactive triangle models
SHP
Shapefile spatial data format (used by many GIS programs)
SHP
Source code and shape file for text fonts (AutoCAD)
SHR
File archive (Unix ASCii) (SHAR)
SHS
Shell scrap file; reportedly used to send "password stealers"
SHTML
HTML file containing Server Side Includes (SSI)
SHW
Presentation (Corel Show)
SHW
Presentation (Harvard Graphics 2.0)
SHW
Slide Show (Microsoft WordPerfect for Windows)
SHX
Shape entities (AutoCAD)
SHX
Shapefile spatial index file (ArcView)
SIF
Setup installation files (Microsoft Windows NT)
SIG
Signature file (PopMail)
SIG
Current program settings (Signature)
SIK
Backup files (Microsoft Word for Windows)
SIK
Backup files (Sicherungskopie)
SIT
Compressed archive of Mac files (Stuffit)
SIZ
Configuration file (Oracle 7)
SKA
Secret Keyring file (PGP)
SKF
Drawing file (AutoSketch)
SKL
Resource file (Macromedia Director)
SL
Save Layout extension (PACT)
SL
Source code file (S-Lang)
SLB
Slide Library File (AutoCAD)
SLC
Compiled SALT script (Telix)
SLD
Slide File (AutoCAD)
SLI
Slide file (MAGICorp Slide Service)
SLK
Symbolic link spreadsheet (SLYK)
SLL
Sound data file (Generic)
SLT
Script application language (SALT) (Telix script source)
SM
Source code file (Smalltalk)
SM
Maillist (SoftSpoken Mailer)
SM
Script file (ScriptMaker)
SM
Text file (Samna Word)
SM3
Symbol file (DataCAD)
SMD
Video game console ROM emulator file
SMF
Fax document (SMARTFAX)
SMK
Image file (Deer's Revenge)
SMK
Image file (Smack Player)
SMK
Image file (Nascar Racing '99)
SMM
Macro (AMI Pro)
SMP
Samplevision format
SMP
Sample file (AdLib Gold)
SMS
Emulator ROM image file (8-bit Sega Master System)
SMT
Text file (Smart Ware II)
SMT
SmartObject file (IconAuthor)
SND
Sound file (NeXt)
SND
Sound resource (Macintosh)
SND
Raw unsigned PCM data
SND
Sample (AKAI MPC)
SNDR
Sound file (Sounder)
SNDT
Sound file (SndTool)
SNG
Midi song file (Midisoft Studio)
SNG
Midi song file (Prism)
SNM
Mailbox (mail folder) index (Netscape)
SNO
Source code file (Snobol4)
SNP
Output video file (Computer Eyes)
SO
Shared library file (Unix)(equivalent to a Windows DLL)
SOL
Solution file (Common used with game examples,tutorials)
SOM
Network serial numbers (Quattro Pro)
SOM
Sort information files (Paradox)
SON
Song file (Creative Labs SoundBlaster Studio II)
SOU
Sound file (Creative Labs SoundBlaster Studio)
SP
Compressed archive for Unix (Sprint)
SP4
Saved game (Roller Coaster Tycoon)
SPC
Program file (Microsoft MultiPlan)
SPC
Temporary file (Microsoft WordPerfect for Windows)
SPD
Data file (Speech)
SPD
Scalable font (Speedo)
SPD
Scalable font (Harvard Graphics 3.0)
SPF
Slide presentation file (EnerGraphics)
SPG
Glossary file (Sprint)
SPI
Graphics file (Siemens Scanner)
SPI
Graphics file (Phillips Scanner)
SPL
Object file (ShockWave Flash)
SPL
Sample file (DigiTracker)
SPL
Compressed archive (SPLINT)
SPL
Customized printer driver (Sprint)
SPL
Personal spell dictionary (Signature)
SPL
Printer spool file (Microsoft Windows 3.x)
SPL
Sample file (Generic)
SPM
Data file (Microsoft WordPerfect for Windows)
SPP
Printer file (Sprint)
SPPACK
Sound sample (SP Pack)
SPR
Document letter (Sprint)
SPR
Generated screen program (Microsoft FoxPro)
SPR
Sprite (Image layering and resizing)
SPRITE
Bitmap file (Acorn)
SPS
Spssx source code file (VAX/VMS)
SPS
Screen driver (Sprint)
SPT
Source code file (Spitbol)
SPT
Support file (MITAC disk/system management utility package)
SPU
Picture file (Spectrum 512)
SPW
Worksheet (SigmaPlot)
SPX
Compiled screen program (Microsoft FoxPro)
SQC
Structured Query Language (SQL) common code file
SQL
SQL queries (Informix)
SQL
Generally used by database products as an extension for SQL queries (scripts, text, or binary)
SQP
Query result of audio search (Sonique)
SQR
Structured Query Language (SQL) program file
SQZ
Compressed archive (SQUEEZE)
SRE
Undefined file (Motorola)
SRF
Raster graphics file (Sun)
SRM
Video game console ROM emulator file
SRP
SCript file (QuickLink)
SRZ
Source file (DataFlex)
SS
Bitmap graphics (Splash)
SSA
Video file (Sub Station Alpha)
SSD
Datafile (SAS/PC)
SSD01
SAS data sets (Unix)
SSD
SAS database (Dos)
SSF
Spreadsheet file (Enable)
SSP
Datafile (SAS Transport)
ST
Source code file (Little SmallTalk)
ST
Instrument library (Scream Tracker)
ST
Disk Image file (Atari)
ST
Stamp file (NeoPaint)
STA
Saved state (Reflection 4.0)
STA
Stack file (SpinMaker Plus)
STB
Stub library (Genus GX Kernel)
STD
State transition diagram graphic file (Prosa)
STD
Standard script file (LocoScript)
STF
Compressed archive (SHRINKTOFIT)
STL
Stereolithography file
STM
Shorter suffix for .shtml, an HTML file containing a server side include (SSI)
STM
Music module (MOD) (Scream Tracker 2)
STM
State transition diagram model file (Prosa)
STM
Music file (Scream Tracker)
STO
Pascal stub OBJ file (Genus GX Kernel)
STQ
Text file (Statistica) (StatSoft Software)
STR
Screensaver file
STR
Structure list OBJ file (dBase IV Application Generator)
STS
Project status information file (Microsoft C/C++)
STS
Song file (Music) (Scream Tracker)
STY
Style sheet (Ventura Publisher)
STW
Data file (SmartTerm for Windows)
STX
Electronic book file (SmarText)
STX
Tax form (CA-Simply Tax)
STY
Style sheet (Generic text and graphics programs0
SUI
Suit library (Simple User Interface Toolkit)
SUM
Summary file (Generic)
SUN
Rasterfile graphics (Sun)
SUP
Supplementary dictionary files (Microsoft WordPerfect for Windows)
SVD
Autosave file for document (Microsoft WordPerfect for Windows)
SVF
Simple Vector Format 2D image (Microstation)
SVG
Autosave file for glossary (Microsoft WordPerfect for Windows)
SVG
Scalable vector graphics file (Adobe)
SVP
Graphics file (Sonique)
SVS
Autosave file for style sheet (Microsoft WordPerfect for Windows)
SVX
Sound file (Amiga 8SVX)
SVX
Interchange file format, 8SVX/16SV
SVY
Database file (SAVVY/PC)
SW
Raw signed Word (16bit) data
SWA
Shockwave audio file in Macromedia Director (an MP3 file)
SWF
Object (ShockWave Flash)
SWG
Swag Packet file (SWAG Reader)
SWP
Swap file (DataCAD)
SWP
Document backup file (Sprint)
SWP
Swap file (DOS)
SY1
Smartpix symbol library (Ami Pro)
SY3
Symbol file (Harvard Graphics 2.0)
SYD
Backup of startup files (QEMM)
SYM
Precompiled header file (Borland C++)
SYM
Program symbol table (Generic to compilers)
SYM
Symbol file (Harvard Graphics 2.0)
SYN
SDSC Synu image file (SDSC Image Tool)
SYN
Synonym file (Microsoft Word 5.0)
SYS
System file (Generic)
SYS
Datafile (SYGRAPH)
SYS
Datafile (SYSTAT)
SYS
Datafile (SPSS/PC)
SYS
System file (Device driver or hardware configuration file)
SYW
Wave file (Yamaha SV-series)
SYW
Graphics symbols (Harvard Graphics)
-
T
T
Source file (TADS)
T
Tape archive (TAR) (Without compression)
T
Tester symbol file (ReaGeniX code generator)
TAB
Table file (MapInfo GIS)
TAB
Guitar Tablature file
TAG
Query tag name file (DataFlex)
TAH
Turbo assembler help file (Borland C++)
TAL
Text illustration file (TypeAlign)
TAR
Tape Archive
TAR
Compressed archive (TAR)
TAZ
Gzip/Tape archive (Unix)
TAZ
Compressed ASCII archive (TAR)
TAZ
Compressed ASCII archive (COMPRESS)
TB1
Font file (Borland Turbo C)
TB2
Font file (Borland Turbo C)
TBF
Fax document (Imavox TurboFax)
TBK
Interactive multimedia files (Asymetrix Toolbook)
TBK
Memo backup file (dBase IV)
TBK
Memo backup file (Microsoft FoxPro)
TBK
Toolbook file (Asymetrix Toolbook)
TBL
Graphics (Native format) (Pagemaker TableEditor)
TBL
Table of values (OS/2)
TBS
Text elements (Microsoft Word for Windows)
TBX
Table (Project Scheduler 4)
TC
Configuration file (Turbo C)
TC
Configuration file (Borland C++)
TCH
Turbo C Help file (Borland C++)
TCL
Script in the TCL/TK Language
TCW
Drawing file (TurboCAD for Windows)
TD
Configuration file (Turbo Debugger for DOS)
TD0
Disk image file (Teledisk)
TD2
Configuration file (Turbo Debugger for WIN32)
TD4
Saved track design (Roller Coaster Tycoon)
TDB
Database file (Thumbs Plus)
TDB
Database file (TACT)
TDDD
A file format use by the Imagine & Turbo Silver ray-tracers
TDF
Font file (TheDraw)
TDF
Typeface definition file (Speedo)
TDH
Help file (Turbo Debugger0
TDK
Keystroke recording file (Turbo Debugger)
TDS
Symbol table (Turbo Debugger)
TDW
Configuration file (Turbo Debugger for Windows)
TEF
Fax document (Relisys TEFAX)
TEL
Hostfile (Telnet)
TEM
Turbo Editor Macro Language script (Borland C++)
TEM
Input template (IconAuthor)
TEX
Texture file
TEX
TEX text file (Scientific Word)
TEX
Datasheet file (Idealist)
TF
Configuration file (Turbo Profiler)
TFA
Area file (Turbo Profiler)
TFC
Catalogue file (Tobi's Floppy Disk Cataloguer)
TFH
Help file (Turbo Profiler)
TFM
Form file (Form Tool Gold)
TFM
TeX font metrics file (TeX)
TFM
Tagged font metric file (TeX)
TFS
Statistics file (Turbo Profiler)
TG1
Project file (On Target)
TGA
Targa bitmap (Adobe Acrobat,TrueVision)
TGA
Targa bitmap (Countour Mortgage Loan Format)
TGA
Winpoint Loan file (Microsoft Excel)
TGQ
Movie file (Dungeon Keeper 2) (Bullfrog Software)
TGV
Video file (Electronic Arts) (Need for Speed I/II/III, NBA '96)
TGZ
Gzip/Tape archive (Unix)
THEME
Desktop theme (Microsoft Windows 9.x)
THM
Thumbnail image file (Microsoft Clip Gallery v.1.x)
THN
Thumbnail (Graphics Workshop for Windows)
THS
Thesaurus dictionary (Microsoft WordPerfect for Windows)
TIF
Tag image bitmap file (TIFF)
TIFF
Tag image bitmap file (TIFF)
TIG
Map file (Tiger) (Used by the US Government to distribute Map files)
TIL
Fuzzy Logic knowledge base file (Togai InfraLogic Fuzzy-C Compiler)
TIM
Texture/Image file (Playstation)
TIS
Tile set (MahJongg 3.0)
TJF
backup files (VAXTPU Editor)
TLB
OLE type library files (Microsoft)
TLB
Reference table (Bubble Editor)
TLB
Text library (VAX)
TLB
Type library (Visual C++)
TLC
Compiled tool command language source code file (Swat)
TLE
Two-Line element set (NASA)
TLP
Project timeline file (Microsoft Project)
TLX
Data file (Trellix)
TMF
Tagged font metric file (Microsoft WordPerfect for Windows)
TMO
Ztg global optimizer default optimizer file (Zortech C++)
TMP
Temporary file (Microsoft Windows) (ALL)
TMS
Script file (Telemate)
TNV
Data file (BitWare)
TOC
Table of contents file (Eudora Mailbox)
TOL
Image file (Kodak Photo Enhancer)
TOS
The Operation System for Atari line of 16/32 and 32/32 computers
TOS
Self-Extracting archive (Atari ST)
TP
Configuration file (Turbo Pascal)
TP
Sesson-state file (Turbo Profiler)
TP4
Saved picture file (Roller Coaster Tycoon)
TPB
Downloadable PCL Soft font file backup (HiJaak)
TPF
Downloadable PCL Soft font file (HiJaak)
TPH
Help file (Turbo Pascal)
TPL
Residents units library (Turbo Pascal)
TPL
Template file ( Cakewalk Audio)
TPL
Template file (Harvard Graphics 2.0)
TPL
Template file (DataCAD)
TPL
Encrypted lesson file (TutorPro)
TPP
Project file (Teleport Pro)
TPP
Protected mode units (Borland Pascal 7.0)
TPU
Turbo Pascal Unit (Turbo Pascal)(BGI)
TPU
Command file (VAXTPU Editor)
TPV
Packed graphics file (TutorPro)
TPW
Session-state file (Turbo Profiler for Microsoft Windows)
TPW
Packed wave files (TutorPro)
TPW
Turbo Pascal Unit (BGI) (Turbo Pascal for Windows 9.x)
TPX
Image file (ULead Photo Express)
TPZ
Compressed archive (TAR)
TPZ
Compressed archive (GNUzip)
TP3
Template file (Harvard Graphics)
TR
Session-state settings (Turbo Charge Debugger for DOS)
TR2
Session-state settings (Turbo Charge Debugger for Win32)
TRA
Saved game file (Coaster)
TRC
Debug support file (Power CTrace)
TRE
Directory tree file (PC-Tools)
TRK
Script file (Kermit)
TRM
Terminal file (Generic)
TRM
Terminal settings file (Microsoft Windows 3.x)
TRN
Translation support file (Quattro Pro)
TRN
Project usage log (MKS Source Integrity)
TRS
Executable file (MicroGraphix)
TRW
Session-state settings (Turbo Debugger for Windows)
TST
Printer test file (Microsoft WordPerfect for Windows)
TTF
TrueType font (Generic)
TTK
Translation tool kit file (Corel Catalyst)
TTO
Client access data specification file (AS/400) (Server to Client)
TUV
Tutorial file (Many programs use this suffix for their tutorials) (Generic)
TV
Table view settings (Paradox)
TV1
Overflow file above insert point in document 1 (Microsoft WordPerfect for Windows)
TV2
Overflow file above insert point in document 2 (Microsoft WordPerfect for Windows)
TV3
Overflow file above insert point in document 3 (Microsoft WordPerfect for Windows)
TV4
Overflow file above insert point in document 4 (Microsoft WordPerfect for Windows)
TV5
Overflow file above insert point in document 5 (Microsoft WordPerfect for Windows)
TV6
Overflow file above insert point in document 6 (Microsoft WordPerfect for Windows)
TV7
Overflow file above insert point in document 7 (Microsoft WordPerfect for Windows)
TV8
Overflow file above insert point in document 8 (Microsoft WordPerfect for Windows)
TV9
Overflow file above insert point in document 9 (Microsoft WordPerfect for Windows)
TVF
Table view settings (dBase IV)
TWF
Data file (TABWorks)
TWW
Template file (TagWrite)
TX8
MS-DOS text
TXB
Encoded briefing file (Descent/D2)
TXF
Compressed archive (TAR)
TXF
Compressed archive (FREEZE)
TXF
Tax exchange format (Quicken and others)
TXI
Support file (TeX)
TXT
ASCII text-formatted audio data
TXW
Wave file (Yamaha TX16W)
TYM
Time Stamp files (PageMaker 4.0)
TZ
Old compression file (TAR), (COMPRESS)
TZB
Compressed archive (Tar)
T2T
Modeling software file (Sonata CAD)
T44
Temporary file for sorting index (dBase IV)
T64
Emulator tape image file (Commodore 64)
-
U-V
UAP
User agent profile (Used by wireless telephony applications)
UB
Raw unsigned byte (8-bit) data
UC2
Compressed archive (UltraCompressor II)
UCN
New compressed archive (UltraCompressor II)
UDF
Unique Database (Microsoft Windows NT)
UDF
Image filter (Photostyler)
UDW
Raw unsigned doubleword (32-bit) data
UE2
Encrypted archive (UltraCompressor II)
UFO
Object file (Ulead)
UG
Drawing file (AutoCAD and others)
UHS
Binary file (Universal Hint System)
UI
Espire source code (Geoworks UI Compiler)
UI
User interface file (Sprint)
UIF
Long prompts for Microsoft Windows ((Microsoft WordPerfect for Windows)
UIH
Espire header file (Geoworks UI Compiler)
UL
Audio file (ULAW)
ULAW
(CCITT G.711) audio (US Telephony)
ULD
Uploaded file information (Procomm Plus)
ULT
Music module (MOD) (UltraTracker)
UMB
Backup file (archive) (MemMaker)
UNI
UniMod music module (MOD) (MikMod)
UNI
Datafile (Forcast Pro)
UNX
Text file (Unix specific information)
UPD
Updated program data (Generic)
UPD
Updated program data (dBase)
UPI
Program file (ULead Photo Impact)
UPO
Compiled updated datafile (dBase)
UPX
Saved Image file (ULead Photo Express)
URF
Universal radar format (Radar ViewPoint)
URL
Internet shortcut file (Universal Resource Locator)
USE
Source Integrity file (MKS)
USP
Printer font w/updated USACII extended character set (Pagemaker)
USR
User database file (Procomm Plus)
USR
Audit trail file (Pro/Engineer)
USR
User database file (Turbo C++)
USR
User database file (Tour)
UU
UU-encoded file
UU
Compressed ASCII archive (UUDE/ENCODE)
UUE
Executable compressed ASCII archive (UUDE/ENCODE)
UUE
UU-encoded file
UW
Raw unsigned 16-bit) datafile (Word)
UWF
Wave file (UltraTracker)
V
Consistency check support file (ReaGeniX Code Generator)
V
Main image input file (Vivid 2.0)
VAL
Validity checks/referential integrity checks (Paradox for Windows)
VAL
Values list object file (dBase Application Generator)
VAL
Asset management document (Milliplex OmniValue)
VAN
Animation file (VistaPro)
VAP
Annotated speech file (Generic)
VAR
Variable file (IconAuthor)
VAR
ASCII text file for data dictionary (Sterling Software Groundworks, COOL Business Team Enterprise Model)
VBA
VBase file
VBP
Project file (Microsoft Visual Basic)
VBR
Remote automated registration file (Microsoft Visual Basic)
VBS
Script file (Microsoft Visual Basic)
VBW
Workspace file (Microsoft Visual Basic)
VBX
Custom control file (Microsoft Visual Basic)
VBX
Visual basic extension (Microsoft Visual Basic)
VC
Include file with color definitions (Vivid 2.0)
VC
Spreadsheet (VisaCalc)
VCE
Unformatted voice file (used by Cool Edit)
VCE
Unformatted voice file (Natural Microsystems) (NMS)
VCF
Virtual card file (Netscape)
VCF
Virtual card file (Many programs use this extension)
VCF
Configuration file; defines objects for use with Sense8's WorldToolKit (Vevi)
VCT
Class library (Microsoft FoxPro) (MFC)
VCW
Visual workbench information file (Microsoft Visual C++)
VCX
Class library (Microsoft FoxPro)(MFC)
VDA
Targa bitmap
VDA
Graphics image (Generic)
VDR
Drawing file (ComputerEasy Draw)
VEL
3D drawing file (CAD( (Ashlar)
VEW
View file (Clipper 5)
VEW
View file (Lotus Approach)
VFL
Clip art file (PrintMaster Gold)
VFM
Voting form (Voter)
VFN
Voting form for customers (VFN)
VGA
Video graphics array (Monitor type, also defines if your monitor is compliant with the new (1994) SVGA (Super Video Graphics Array) (SVGA)
VGA
Video graphics array (Font type for display on a VGA Monitor)
VGD
Visual display driver ( Generic CADD)
VGR
Graphics file (Ventura Publisher)
VI
Graphics file (Jovian Logic VI)
VI
Virtual Instrument file (National Instruments LABView)
VIC
Graphics file (Vicar)
VID
Shell monitor file (Microsoft DOS v.5)
VID
Screen device driver (Microsoft Word)
VID
Bitmap graphics (YUV12C M-Motion Frame Buffer)
VID
Bethesda video files (Terminator, Future Shock)
VIF
Khoros Visualisation image (SDSC Image Tool)
VIFF
Khoros Visualisation image (SDSC Image Tool)
VIK
Graphics Image (Viking)
VIR
File identified as a virus-infected file by Norton AntiVirus and possibly others
VIS
Graphics image file (VIS)
VIV
Streaming video file (VivoActive)
VIZ
dVS/dVISE file (Division)
VLB
Library file (Corel Ventura)
VLM
Drafting program file (Vellum, by Ashler)
VM
Virtual memory file (Geoworks)
VMC
Virtual memory configuration file (Adobe Acrobat Reader)
VMD
On-line video file (Sierra) (Torin's Passage)
VMF
Audio file (FaxWorks)
VMF
Font characteristics file (Ventura Publishing)
VML
Vector markup language (used by Microsoft Office 2000)
VMS
Text file with vms specific information
VO
Include file with object definiton (Vivid 2.0)
VOB
Encrypted video and audio files used on current DVD's (Digital Video Disk)
VOC
Audio file (Creative Labs Sound Blaster)
VOC
Audio file (Quartet)
VOF
Object folder (VZ Programmer)
VOX
Dialogic audio file coded using ADPCM
VOX
Formatted voice file (Natural Microsystems) (NMS)
VOX
Audio file (Talking Technology)
VP
Publication (Ventura Publisher)
VPG
Graphics image file (VPGraphics)
VQA
Video files (Westwood Studios)
VQE
VQ Locator file (Yamaha Sound)
VQF
VQ file (Yamaha Sound) (possible emerging standard)
VQL
VQ Locator file (Yamaha Sound)
VRF
Configuration file (Oracle 7)
VRM
Overlay file (Quattro Pro)
VRML
A VRML file
VRP
Project file (VXRexx)
VRS
Video device driver (Microsoft WordPerfect for Windows)
VS
Include file w/surface definition (Vivid 2.0)
VSD
Drawing file (flow chart or schematic)(Shapeware Visio)
VSL
Download List file (GetRight)
VSM
Simulation model (VisSim)
VSN
A Windows 9x/NT ViruSafe version file; used to keep information about all the files in a directory; when a file is accessed, information is compared with the VSN information to ensure that they match
VSP
Image sprite (SPX)
VSP
Data print file (Schedule Soft)
VSS
Stencil file (Shapeware Visio)
VSS
Smartshapes image file (Shapeware Visio)
VST
Targa bitmap (Generic)
VST
Bitmap graphic file (TrueVison Vista)
VSW
Workspace file (Shapeware Visio)
VUE
Animation file (3D Studio)
VUE
View file (dBase IV)
VUE
View file (Microsoft FoxPro)
VW
Text file (Volkswriter)
VWP
Audio MetaSound plug-in (VoxWare Audio Compression Toolkit version 2.02.61)
VWP
Audio plug-in (Voxware MetaVoice Toolkit)
VWR
File viewer (PC Tools)
VXD
Virtual device driver (Microsoft Windows 9.x)
V8
8-bit audio file (CoVox)
-
W-X
W
Word chart file (APPLAUSE)
W30
Printer font (AST TurboLaser)
W30
Printer font (Ventura Publisher)
W31
Startup file (Microsoft Windows 3.1)
W3L
W3Launch file
W44
Temporary file for Sort or Index (dBase)
WAB
Outlook file (Microsoft Outlook, Outlook Express)
WAD
Large file for Doom game containing video, player level, and other information
WAL
Texture file (Quake 2)
WAS
Script source code file (Procomm Plus Aspect)
WAV
Waveform sound (Microsoft Windows)
WAX
Compiled script file (Procomm Plus Aspect)
WB1
Notebook (QuattroPro for Windows)
WB2
Spreadsheet (QuattroPro for Windows)
WB3
Text file (QuattroPro for Windows)
WBC
Image file (Webshots)
WBF
Batch file (Microsoft Windows 9.x)
WBK
Backup file (Microsoft Word for Windows)
WBL
Upload file (Argo Webload II)
WBR
WordBar File (Crick Software)
WBT
Batch file (WinBatch)
WBT
Wordbar template (Crick Software)
WCD
Macro token list file (Microsoft WordPerfect for Windows)
WCM
Macro (Microsoft WordPerfect fdor Windows)
WCM
Data transmission file (Microsoft Works)
WCP
Product information description file (Microsoft WordPerfect for Windows)
WD2
Database file (Info Select) by (Micro Logic)
WDB
Database file (Microsoft Works)
WDF
WebArt data file (database file that can be converted for use in many programs)
WDG
Warftpd remote daemon file
WEB
Web document (Corel Zara)
WEB
Web source code file
WFB
Bank file (Maui/Rio/Monterey) (Turtle Beack WaveFront)
WFD
Drum set (Maui/Rio/Monterey)(Turtle Beach WaveFront)
WFD
Audio waveform (WaveForm Manager Pro)
WFL
Flowchart file (Winflow)
WFM
Windows form (Virtual dBase)
WFN
Symbol (Corel Draw)
WFP
Program file (Turtle Beach WaveFront)(Maui/Rio/Monterey)
WFT
Data file (NICOLET (Old Format), see NRF)
WFX
Data file (WinFax)
WG1
Worksheet (Lotus 1-2-3/G)
WG2
Worksheet (Lotus 1-2-3 for O/S2)
WGP
Data file (Wild Board Games)
WI
Wavelet compressed bitmap (Corel)
WID
Width table (Ventura Publisher)
WIF
Wavelet image file (see WI)
WIL
WinImage file
WIM
Wireless identity module (Used by wireless application protocols)
WIN
Window file (Microsoft FoxPro)
WIN
Window file (dBase)
WIN
Window preference file (Pro/Engineer)
WIS
Script file (Reynolds & Reynolds) (Stores the results of a database query)
WIZ
Wizard file (Microsoft Word)
WIZ
Page wizard (Microsoft Publisher)
WK1
Spreadsheet (Lotus 1-2-3 v. 1 and 2)
WK3
Spreadsheet (Lotus 1-2-3 v. 3)
WK4
Spreadsheet (Lotus 1-2-3 v. 4)
WKB
Document file (Microsoft WordPerfect for Windows)
WKE
Spreadsheet (Lotus 1-2-3 Educational version)
WKQ
Spreadsheet (Quattro Pro)
WKS
Spreadsheet (Symphony 1.0)
WKS
Worksheet spreadsheet (Lotus 1-2-3)
WKS
Document (Microsoft Works)
WKS
Workspace file (Xlisp)
WLD
REND386/AVRIL file
WLF
Upload file (Argo Upload I)
WLK
Graphics file (Virtus Walkthrough)
WLL
Add-In file (Microsoft)
WMA
Audio file in Microsoft Windows Media format (Can be changed to ASF) Siren (Sonic Foundry)
WMC
Backup files for startup (MathCAD for Windows)
WMC
Macro file (Microsoft WordPerfect for Windows)
WMC
Text file (WordMARC)
WMF
Metafile (Microsoft Windows)
WN
Text file (NeXT WriteNow)
WNF
Outline font description file (CorelDRAW)
WOA
Swap file (Microsoft Windows 3.x)
WOC
Organization chart (Microsoft Windows OrgChart)
WOW
Music module (MOD) (Grave Composer)
WP
Document file (Microsoft WordPerfect for Windows)
WPA
Word processor document (ACT!)
WP4
Document (Microsoft WordPerfect for Windows 4.0)
WP5
Document (Microsoft WordPerfect for Windows 5.0)
WP6
Document (Microsoft WordPerfect for Windows 6.0)
WPD
Demo file (Microsoft WordPerfect for Windows) (ALL)
WPD
Document (Microsoft WordPerfect for Windows)
WPF
Document (Enable)
WPF
Fax document (WorldPort)
WPF
Form file (Microsoft WordPerfect for Windows)
WPG
Microsoft Word for Windows vector graphics (DrawPerfect)
WPG
Graphics file (Microsoft Word for Windows)
WPK
Macro (Microsoft Word for Windows)
WPM
Macro (Microsoft Word for Windows)
WPS
Text document (Microsoft Works)
WPT
Template (Microsoft Word for Windows)
WPW
PerfectWorks document (Novell)
WQ!
Compressed spreadsheet (QuattroPro)
WQ1
Spreadsheet (QuattroPro/DOS)
WQ2
Spreadsheet (QuattroPro version 5)
WR1
Symphony file (Lotus)
WR1
Spreadsheet (Symphony 1.1-2)
WRD
Template (Charisma)
WRG
ReGet document
WRI
Write document (Windows Write)
WRK
Project file (CakeWalk Music Audio)
WRK
Spreadsheet (Symphony 1.0)
WRL
Virtual Reality model
WRP
Compressed Amiga archive (WARP)
WRP
3D modeling file (Raindrop Geomagic) (Scandata)
WRS
Resource file (Microsoft Word for Windows)
WRZ
Another VRML fileject
WS
Text file (WordStar)
WS1
Document (WordStar for Windows version 1)
WS2
Document (WordStar for Windows version 2)
WS3
Document (WordStar for Windows version 3)
WS4
Document (WordStar for Windows version 4)
WS5
Document (WordStar for Windows version 5)
WS6
Document (WordStar for Windows version 6)
WS7
Document (WordStar for Windows version 7)
WSD
Document (WordStar for Windows 2000)
WSP
WorkSpace file (Fortran PowerStation)
WST
Document (WordStar for Windows)
WSZ
Skin (WinAmp)
WTA
Used by wireless telephony applications
WVL
Wavelet Compressed Bitmap
WVW
Interleaf WorldView format (a PDF format)
WWB
Button bar for document window (Microsoft WordPerfect for Windows)
WWK
Keyboard layout file (Microsoft WordPerfect for Windows)
WWL
Add-in file (Microsoft Word)
WXD
Music resource file (Relic Entertainment)(Home World)
WXP
Document file (EXP for Microsoft Windows)
X
AVS image (SDSC Image Tool)
X
Source code file (Lex)
XAR
Corel Xara drawing
XBM
A MIME 'X11" bitmap image
XDL
XML Schema file
XFN
Printer font file (Xerox)
XFN
Printer font file (Ventura Publisher)
XFT
Printer font file (24 Pin) (ChiWriter)
XFX
Fax Document (Various)
XHTML
eXtensible hypertext markup language
XI
Instrument sample file (ScreamTracker)
XI
Instrument file (FastTracker II)
XIF
Wang imaging file (Included with Windows 95)
XIF
Image file (Xerox) (same as TIF)
XIF
Image file (Pagis)
XIF
Image file eXtended (ScanSoft) the file is similar to TIFF and is a (Pagis) native format
XLA
Add-in file (Microsoft Excel)
XLA
Archive (Xlib)
XLB
Toolbar file (Microsoft Excel)
XLB
Datafile (Microsoft Excel)
XLC
Chart file (Microsoft Excel)
XLD
Dialogue file (Microsoft Excel)
XLK
Backup file (Microsoft Excel)
XLL
Add-in file (Microsoft Excel)
XLL
Dynamic link library (Microsoft Excel)
XLM
Macro file (Microsoft Excel)
XLS
Worksheet file (Microsoft Excel)
XLT
Template file (Microsoft Excel)
XLT
Translation table (Lotus 1-2-3)
XLT
Translation table (Symphony)
XLT
Translation table (Procomm Plus)
XLV
VBA module (Microsoft Excel)
XLW
Workbook (Microsoft Excel)
XM
Music module (MOD) (Fast Tracker 2)
XMI
Compressed midi music (eXtended)
XML
eXtensible markup language
XNF
Network file (Standard)
XNK
Shortcut file (Microsoft Exchange)
XON
Datafile (Axon)
XPM
X BitMap format
XQT
Executable file (Waffle)
XQT
Macro file (SuperCalc)
XXX
XXXX
XR1
Data file (Epic Megagames Xargon)
XRF
Cross-reference file (Generic)
XTB
External translation table (LocoScript)
XTP
Data file (Xtree)
XWD
X Window Dump format (SDSC Image Tool)
XWF
Works file (Yamaha XG) (MIDI sequencing)
XWK
Keyboard mapping file (Crosstalk)
XWP
Session file (Crosstalk)
XWP
Text file (Xerox Writer)
XX
Compressed ASCII archive (XXENCODE)
XXE
Compressed ASCII archive (XXENCODE)
XY
Text file (XYWrite)
XY3
Document file (XYWrite III)
XY4
Document file (XYWrite IV)
XYP
Document file (XYWrite III Plus)
XYW
Document file (XYWrite for Windows 4.x)
X01
Secondary index file (Paradox)
X02
Secondary index file (Paradox)
X03
Secondary index file (Paradox)
X04
Secondary index file (Paradox)
X05
Secondary index file (Paradox)
X06
Secondary index file (Paradox)
X07
Secondary index file (Paradox)
X08
Secondary index file (Paradox)
X09
Secondary index file (Paradox)
X16
Macromedia Extra (program extension), 16 bit
X32
Macromedia Extra (program extension), 32 bit
-
Y-Z
Y
Grammar file (Yaac)
Y
Compressed Amiga archive (YABBA)
YAL
Clipart library (Arts & Letters)
YBK
Yearbook file (Microsoft Encarta)
YUV
Graphics file (YUV)
YZ
Compressed file archive (YAC)
Y01
Secondary index file (Paradox)
Y02
Secondary index file (Paradox)
Y03
Secondary index file (Paradox)
Y04
Secondary index file (Paradox)
Y05
Secondary index file (Paradox)
Y06
Secondary index file (Paradox)
Y07
Secondary index file (Paradox)
Y08
Secondary index file (Paradox)
Y09
Secondary index file (Paradox)
Z
Compressed ASCII archive (COMPRESS)
Z
Unix file (Compressed)
ZAP
Software installation settings file (Microsoft Windows)
ZAP
Compressed file (FileWrangler)
ZDG
Compressed text document (Zview)
ZER
Data file (Zerberus)
ZGM
Graphics file (ZenoGraphics)
ZIP
Zip file (Compressed archive)
ZOM
Compressed Amiga archive (ZOOM)
ZOO
An early compressed file format
ZVD
Voice file (Zyxel Z-Fax)
Z3
Game module (Infocom)