The following tables display file extensions associated with miscellaneous files, with extensions for the most commonly encountered file formats listed first:
| File Extension |
File Description |
| .acb |
AOL Cab Launcher |
| .ad |
After Dark Screensaver |
| .aim |
AOL Instant Messenger Launch File |
| .aol |
America Online File |
| .asl |
Photoshop Style |
| .atn |
Photoshop Actions |
| .atz |
Atomic Time Zone File |
| .buf |
Buffer File |
| .ca |
Initial Telnet Cache |
| .cache |
Cache File |
| .cal |
Calendar File |
| .calb |
Coolect Album File |
| .cbt |
Computer Based Training File |
| .cdx |
Compound Index |
| .cfg |
Configuration File |
| .chk |
Saved File Fragment |
| .clkk |
Clicker Keyboard |
| .clkt |
Clicker Template |
| .clkw |
Clicker Word Bank |
| .clkx |
Clicker Grid Set |
| .cm |
Cable Modem Configuration File |
| .cnf |
Telnet Configuration File |
| .csf |
Photoshop Color Settings |
| .dbx |
Outlook Express E-mail Folder |
| .dc1 |
Bloomba E-mail Message |
| .dek |
Flashcard Deck |
| .dem |
Digital Elevation Model |
| .dgc |
TurboTax Tax Form |
| .dic |
Dictionary |
| .dpb |
FaxMaster Document |
| .dqy |
Excel Query File |
| .dsc |
CoolPix Disk Identification File |
| .dst |
Embroidery Format |
| .dt_ |
Macintosh Data Fork |
| .dus |
Readiris Font Dictionary |
| .dwn |
Firmware Update File |
| .eml |
Outlook Express Saved Mail Message |
| .env |
Word Perfect Environment |
| .eql |
MathType Settings |
| .eqn |
Word Perfect Equation |
| .eqp |
MathType Preferences |
| .exd |
Control Information Cache for Microsoft Office |
| .ext |
Norton Commander Extension |
| .eyb |
Microsoft Encarta Yearbook Update File |
| .fdf |
Acrobat Form Data Format |
| .flp |
Flash Project |
| .fpk |
JetForm FormFlow File |
| .frk |
Macintosh Resource Fork / Data Fork |
| .frm |
Form File |
| .frz |
Locked FormFlow File |
| .gly |
Microsoft Word Glossary |
| .gp4 |
CCITT Group 4 File |
| .gp4 |
Guitar Pro 4 Tablature |
| .gpg |
GNU Privacy Guard Public Keyring |
| .hhc |
HTML Help Table of Contents |
| .hhk |
HTML Help Index |
| .hlb |
VMS / VAX Help Library |
| .hlp |
Windows Help File |
| .hlx |
ATI Radeon Video Driver Support File |
| .hm3 |
Help & Manual 3 Project |
| .hmx |
Help & Manual 4 Project |
| .hus |
Husqvarna Embroidery Format |
| .iml |
ACT! Internet Mail Message |
| .inm |
FaxMaster Document |
| .isn |
Installer Source Files |
| .iva |
Dementia.4207 Virus File |
| .iws |
InstallWatch Scan File |
| .key |
Keynote Presentation |
| .kth |
Keynote Theme |
| .kyb |
Keyboard Layout |
| .kys |
Adobe Photoshop CS Keyboard Shortcut File |
| .ldb |
Microsoft Access Lock File |
| .lic |
Software License |
| .lid |
Kodak EasyShare Album File |
| .lst |
List of Data |
| .m |
Mathematica Function |
| .mad |
Access Module |
| .maf |
Microsoft Access Form |
| .mam |
Microsoft Access Macro |
| .maq |
Microsoft Access Query |
| .mar |
Microsoft Access Report |
| .mas |
Access Stored Procedures |
| .mat |
Microsoft Access Table |
| .mau |
Media Attachment Unit |
| .mav |
Access View File |
| .maw |
Access Data Access Page |
| .mci |
Media Control Interface |
| .mdw |
Access Workgroup File |
| .mhs |
Hardware Specification File |
| .mif |
Management Information Format |
| .mpp |
Microsoft Project File |
| .mps |
Pocket Streets Map File |
| .ms-tnef |
MS Transport Neutral Encapsulation Format |
| .msf |
Mail Summary File |
| .mso |
Inline E-mail Attachment |
| .mss |
Software Specification File |
| .mtf |
Motorola Theme File |
| .mvs |
Project Language and Simulation File |
| .nch |
Outlook Express Folder File |
| .ndx |
Index File |
| .nn |
Nero CD File List |
| .ntx |
Clipper Index File |
| .odf |
OpenDocument Formula |
| .odp |
OpenDocument Presentation |
| .ods |
Outlook Express Mailbox |
| .ops |
Office Profile Settings File |
| .otf |
OpenDocument Formula Template |
| .otp |
OpenDocument Presentation Template |
| .pap |
Corel Painter Paper Texture |
| .pes |
Embrid Embroidery Format |
| .pgp |
PGP Security Key |
| .ph |
AOL Phone Home Settings |
| .pid |
Process ID |
| .pnz |
Panorama Database Set |
| .ppf |
Paint Shop Pro Soft Plastic Preset File |
| .prb |
xyAlgebra File |
| .prc |
Corel Presentation |
| .prn |
Printable File |
| .prt |
Presentations Template |
| .psf |
Photoshop Proof Setup |
| .pss |
Picture and Sound Show File |
| .pwrep |
Password Repository File |
| .qxl |
QuarkXpress Library |
| .rcd |
Arcade File |
| .reg |
Registration Information |
| .rmr |
ResumeMaker File |
| .rov |
Report Object Variable |
| .rrr |
Rhapzodé Resource Repository |
| .rrt |
Rhapzodé Resource Template |
| .rtp |
TurboTax Update File |
| .scd |
TurboTax Schedule Description |
| .sdd |
StarOffice Presentation |
| .set |
Settings File |
| .sew |
Home Embroidery Format |
| .sfv |
Simple File Verification File |
| .shw |
Corel Presentation |
| .sis |
Symbian Installation File |
| .snm |
Netscape Mail Index |
| .spd |
Sealed Acrobat Document |
| .spdf |
Sealed PDF |
| .sti |
StarOffice Presentation Template |
| .sxi |
StarOffice Presentation |
| .sxm |
StarOffice Math File |
| .tax |
TurboTax Tax Return |
| .tdl |
MathType Translator Definition Language |
| .tmb |
Timbuktu Pro Document |
| .tnef |
Transport Neutral Encapsulation Format |
| .tol |
AOL Tool File |
| .tpl |
Document Template |
| .tub |
Paint Shop Pro Picture Tube |
| .tvl |
TurboTax File |
| .ver |
Version Record |
| .vpc7 |
Virtual Machine Package |
| .vsw |
Visio Workspace File |
| .wcm |
Microsoft Works Communications Script |
| .wms |
Windows Media Skin |
| .wmz |
Compressed Windows Media Player Skin |
| .wpf |
WordPerfect Form |
| .wpl |
Windows Media Player Playlist |
| .wpm |
WordPerfect Macro |
| .wpp |
WordPerfect Color Palette |
| .wrl |
VRML World |
| .wrz |
VRML World |
| .xem |
eManager Metered Units |
| .xep |
eManager File Packaging Information |
| .xes |
eManager Skins Definition |
| .xet |
eManager Process Definition |
| .xev |
eManager Auto-Update File |
| .xlm |
Excel Macro |
| .xol |
Swiss Map Overlay |
| .ybk |
Microsoft Encarta Yearbook File |
| .ymg |
Yahoo Messenger File |
| .yps |
Yahoo Messenger File |
| .z1 |
Zone Alarm Renamed .vb File |
