A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Num Sym
.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.C C Program File
[Note: Some UNIX compilers use .c (lower case) for C and .C (upper case) for C++]
Check Point Site Configuration for Secure Remote
UNIX Compact File Achive
Desktop Color Separation Specification Cyan Layer (usually an EPS file)
ADS Source Code File
Origin C Program File (Origin is scientific graphing and data analysis software.)
.C?? WinAce Compressed File (open with WinRAR)
.C++ C++ Source Code
.C-- Sphinx C-- Source
.C00 Ventura Print File
.C01 Typhoon Wave File (unverified - may just be one of a string of
compressed files [see .C??])
.C08 Lord Of Destruction Game File (unverified - may just be one of
a string of compressed files [see .C??])
.C13 Charlie Packer [Unverified] Lossless .WAV compression.
Program no longer available.
.C2D IsoBuster File
WinOnCd CD Image
.C3D Chem3D Chemical File
Cult3D Designer Intermediate File (interactive 3D objects)
.C3T Chem3D Chemical Template File
.C4 JEDMICS (Joint Engineering Data Management) DoD Engineering Data Format
[For-pay Viewer]
Edmics [XnView]
.C4D Cinema 4D (3D Modeling texturing and animation program)
.C6 Ashlar-Vellum File
.C64 Commodore 64 Game ROM [Use CCS64 Emulator]
.C86 C86 C Program
.C-- Sphinx C-- Source code
.CA Telnet Server Initial Cache Data File
DATAIR FlexPlus Data File
.CA1 OzWin CompuServe E-mail/Forum Access Catalog File
STABCAL (stability calculation for aqueous systems) File
.CA2 STABCAL (stability calculation for aqueous systems) File
.CA4 Electronics Workbench Circuit
STABCAL (stability calculation for aqueous systems) File
.CA7 Beta 44 Job File
STABCAL (stability calculation for aqueous systems) File
.CAB Cabinet File (Microsoft installation archive)
Install Shield v5.x or 6.x Compressed File
(not compatible with Microsoft .CAB files)
.CAC dBase IV Executable File
.CAD Softdesk Drafix CAD File
.CAF Southern Company Terrestrial Data Acq
.CAG Microsoft Clip Gallery Catalog File
.CAJ CAJViewer (Chinese reader similar to Adobe Acrobat Reader) (Chinese site)
.CAL SuperCalc Worksheet
Calendar File
HTML Calendar Maker Pro
DOS Calendar Creator File
Cals Raster File [SwiftView]
Radiance Function File Format
CALS Raster [XnView]
Microsoft Schedule Data
Cakewalk Application Language Script
(An event-processing language that you use to extend Pro Audio and
Professional with custom editing commands.)
HP PhotoSmart 850 Digital Camera Firmware Update
(also associated with .FWI file)
.CALS CALS Raster [XnView]
.CAM Casio QV Digital CAMera Image [XnView] [IrfanView]
Camtasia Project/Producer Files (screen recording editor)
Sierra NASCAR Racing 2002 Replay Camera Settings
.CAN Canon Navigator Fax [XnView]
.CAP Ventura Caption
Network Associates Sniffer Capture File
Agilent LAN Analyzer Capture File
Fluke Protocol Inspector Capture File
Microsoft NetMon Capture File
Shomiti Surveyor Capture File
Sun Snoop Capture File
TTC FireBerd 500 PC Capture File
WWG Domino Capture File
WWG LinkView PRO Capture File
Telix Session Capture
Compressed Music File
.CAPS Visimetrics Digital CCTV Recording (series of JPEG images)
.CAR AtHome Assistant File
Carrara Environment
NeoBook Cartoon [XnView]
Viper Racing Car Description File
Insight II Cartesian Coordinate File
Sierra NASCAR Racing 2002 Car Description File
Broderbund American Greetings CreataCard
.CAS Comma-delimited ASCII File
i2's Case Notebook Timeline Analysis
Casio Program
Cascade DTP File (desktop publishing for browsers using CSS technology)
.CAT dBase Catalog
Microsoft Security Catalog
(distributed with drivers and updates to assure file integrity)
Todd Osborne Directory Catalog
Quicken IntelliCharge Categorization File
Cognos Impromptu Database Report
OzWin CompuServe E-mail/Forum Access Catalog File
Photomatrix PhotoStudio Graphic [XnView]
.CATPART CATIA (integrated suite for product design)
.CATPRODUCT CATIA (integrated suite for product design)
.CAZ Computer Associates Archive
.CB Microsoft Clean Boot File
Crystal Button File
Brief Macro Source Code
COMBAS Source Code
.CB3 CliBench Mk III SMP 0.7.10 (measure system performance)
.CBC CubiCalc Fuzzy Logic System File
.CBF Calendar Builder File
Infinity Game Engine Archive of Resources
(indexed by .KEY file - Icewind Dale only) [More Info]
.CBH ChessBase Chess Database File
.CBI IBM Mainframe Column Binary Formatted File
.CBK National Construction Estimator 32 Costbook
Corex Technologies CardScan Backup File
.CBL COBOL Program (also see .COB)
Contextual Browsing Language Viewer (usually JavaApplet)
Liant RM/COBOL Development System Source File (Compiles RM/COBOL applications)
.CBM XLib Compiled Bitmap
Fuzzy Bitmap [XnView]
.CBO COMBAS Object File / Compiled Program
.CBP CentraBuilder File (web editing) [Expected availability Sep 2002]
.CBS Cardbox Macro Script (database program)
.CBT Computer Based Training
.CBV ChessBase Archive File
.CBW Cardbox Workspace (database program)
.CC C++ Program File
Visual dBASE Custom Class File
dB2K Custom Class File
Picture Window's Color Curve File (ASCII text file)
ADS Source Code File
.CC1 Chem3D Cartesian Coordinates 1
Briggs Softworks Calendar Commander
.CC2 Chem3D Cartesian Coordinates 2
ClubControl 2 (Internet cafe management/administration - Russian link)
.CC5 Calendar Creator 5.x 6.x File
.CCA CC:Mail Archive File
Multimedia Fusion File (multimedia game creation - Clik N Create,
The Games Factory can open some)
.CCB Visual Basic Animated Button Configuration
.CCC Microsoft Internet Chat
Curtain Call Native Bitmap Graphic
WordPerfect Office Calendar File (CALENDAR.CCC)
.CCD CloneCd Control File [Fantom CD Emulator]
Vector CAD Program File
.CCE Calendar Creator 2 Event File
.CCF OS/2 Multimedia Viewer Configuration File
Symphony Communications Configuration File
Remote Control File (various to include: ProtoProEdit, RAVedit)
AudioReQuest Control File
Hallmark Card Studio File
Cannondale Motorcycle ECM System Engine Calibration File
.CCH Corel Chart
Fabasoft Components
PhotoModeler (Photogrammetry software)
Forgotten Realms Unlimited Adventures (FRUA) Character Reference File
[Fan Site]
.CCL Intalk Communication Command Language
.CCM Lotus CC:Mail Mailbox
.CCN Vitalize! Game File [Played via IE plug-in]
IMSI Multimedia Fusion Express File (Product dropped; was Click 'n
Create game creation file) [Support site]
.CCO CyberChat Data File
XBTX BTX Graphics File
MicroSim PCBoard Autorouter Session Output
.CCP C Converter Profiles (construction site management)
CalComp Color Palette File
CaptureCAM-PRO Screen Recording
.CCPR CaptureCAM-PRO
.CCR Microsoft Internet Chat Room Shortcut
.CCS CONKY CeZaR Stribas International
.CCT Macromedia Director Shockwave Cast
Logic Works Schematic File
SIL Hebrew Font System Transliteration Table
MicroSim PCBoard Design Information and Rules For Autorouting
.CCX Corel Compressed Exchange File
.CD cdTree Content List
IsoBuster File
.CD1 DATAIR Cafeteria Document System Data File
.CD2 DATAIR Cafeteria Document System Custom Text File
.CDA CD Audio Track
.CDB Turbo C Database
Clipboard File
One Page from a ROM With a View Project File
CardScan Database
Nokia 9210/9290 Contact Database (Nokia runs Symbian)
SymbianOS Contact Database File
PowerDesigner Conceptual Model Backup File
.CDBK SPSS Database File [PSPP Free Version Info]
.CDC Chromeleon Driver Configuration Plugin
Nero File (CD burning/design software)
.CDD Chromeleon Device Driver
Claris Draw v 1.2 Document
Concept Draw (vector drawing for Macintosh and PC)
.CDDA AIFF Audio File [Play with Quicktime]
.CDE Honeywell Hybrid Control Designer (HC900-x Industrial Controllers)
CADKEY Dynamic Extension (Add-on module for CADKEY products)
.CDF Comma Delimited Format
Cyberspace Description Format
Microsoft Channel Definition Format
InstallShield Components Definition File
NetCDF Graphic File
MicroSim PCBoard Component Description File For Bill Of Materials
.CDG DART Karaoke Studio CD+G File (contain only song lyrics and synchronization data)
.CDI Phillips Compact Disk Interactive Format [IsoBuster Data Recovery Tool]
Disc Juggler File (CD-ROM data)
.CDJ Disc Juggler File (CD-ROM data)
.CDK Atari Calamus Document
.CDKEY Protocol Used in Communicating from MediaRemote Server
to PC MediaRemote Plug-in (ASCII text)
.CDL CaseWare Working Papers Document Link
SignLab Vector Graphic
CADKEY Advanced Design Language (CADL) (CADKEY's scripting/macro language,
also used for export to some CAM programs.)
.CDM PowerDesigner Conceptual Model File
Visual dBASE Custom Data Module
Compressed Music Format (unverified)
.CDO Cdo Navigator (Analyzes financial portfolios)
.CDP CD/Spectrum Pro
.CDQ CD Indexer
.CDR Corel Vector Graphic Drawing [XnView]
Raw Audio-CD Data
Sound File [Linux Player]
.CDS ChemDraw Stationery Document
.CDT Corel Draw Template
STABCAL (stability calculation for aqueous systems) File
ProWORX Nxt Temporary Long Comment Data (Found in the NxT directory)
.CDU CDU Paint [XnView]
.CDW CeledyDraw Image
CADKEY Organized Dialog File
.CDX Compound Index [File Structure]
Corel Draw Compressed Drawing
Microsoft Visual Foxpro Index
Active Server Document
ChemDraw Chemical Structure
Microstation Cell Library Index
.CDXL Old Amiga Movie Format
.CDXML ChemDraw XML ChemDraw Format
.CDZ ROM With a View Project File
.CE FarSide Computer Calendar File
Computer Eyes, Digital Vision [XnView]
.CE1 Computer Eyes, Raw [XnView]
.CE2 Computer Eyes, Raw [XnView]
.CE3 Calendar Creator 3.x 4.x Event List
.CEG Continuous Edge Graphic
Tempra Show Bitmap Graphic or Edsun Continuous Edge Graphic
.CEI CRiSP Harvest File
.CEL Autodesk Animator Graphic
CIMFast Event Language File
Kiss Paper Doll File
Microstation Cell Library
Kiss Cel [XnView]
Lumena CEL [XnView]
.CEM Empire Earth Game File
.CEN Master Tracker Financial Analysis
.CEO Extension associated with Winevar Worm (The worm sets .CEO as
an executable extension so future files arriving with
this extension will be automatically run.)
.CER Certificate File
Sierra Print Artist Certificate
.CEV Software License Tracking Tool (CERTAUTH.CEV)
LOUT Character Encoding File (High-Level Language For Document Formatting)
.CEX The Currency Exchanger Rate File
INMOS Transputer Development System Occam User Program
ThumbsPlus File (Progressive Multi-image JPEG file)
.CF Imake Configuration File
Sendmail Configuration File
[Other configuration files as well]
.CF4 Catfish File Manager Support File
.CFB Comptons Multimedia File
.CFC Cold Fusion File
.CFF Capabilities File for FOUNDATION(tm) Fieldbus H1 (31.25 kbit/s)
.CFG Configuration (various)
.CFH Capabilities File for FOUNDATION(tm) Fieldbus HSE (100 Mbit/s)
.CFL Corel Flowchart File
.CFM Corel FontMaster
Cold Fusion Template File
Visual dBASE Windows Customer Form
.CFML Cold Fusion Markup Language
.CFN Atari Calamus Font Data File
.CFO TCU Turbo C Utilities C Form Object
.CFP Complete Fax Portable Fax File
.CFR IBM Configurator Report (if you don't have the program ask the sender
to export to .RTF for you)
.CFT Cumberland Family Tree
.CFW ChemFinder Form
.CFX Flow-Cal File (natural gas measurement)
.CG3 Dungeons & Dragons Character File [Editor]
.CGA Ventura CGA Screen Characters
.CGF ProWORX Nxt CODEGEN Batch File (For automating macro insertions -
Found in the NxT directory)
.CGI Common Gateway Interface Script
.CGM Computer Graphics Metafile
.CGP NetCaptor CaptorGroup
.CH Clipper Header
OS/2 Configuration File
.CH3 Harvard Chart (Harvard Graphics taken over by Serif)
.CH4 Charisma 4.0 Presentation
.CHA Adobe Pagemaker Kerning Data
.CHAT PIRCH98 Chat File
.CHD Ares FontChameleon Font Descriptor
ChartFX File
.CHF pcAnywhere Remote Control File
.CHI Chiwriter Document
Help File Index (typically used when the Help file will stay
on a CD-ROM -- .CHI speeds access to the info)
.CHJ Help Composer Project
.CHK CHKDSK/SCANDISK Output
WordPerfect Temp File
Sophos Intercheck File
Starcraft Campaign Map
.CHL Chromeleon Channel Raw Data
Configuration History Log
IE Channel Information
.CHM Compiled HTML Help
ChemDraw Chemical Structure (old format)
.CHN Ethnograph Data File
.CHO Hash Animation:Master Choreography
Mussoft Chord Pro Song Format
.CHOPRO Mussoft Chord Pro Song Format
.CHP Ventura Publisher Chapter
.CHQ Help Combined Full-text Search File (produced when multiple .CHM files are merged)
.CHR Character or Font File
Infinity Game Engine Exported Character Info [More Info]
.CHS Corel WP Chart Style
ATI Radeon Video Driver File
.CHT Cheat Machine Data File
ChartViewer dBase Interface File
Harvard Graphics Vector File (Harvard Graphics taken over by Serif)
ChartFX Template File
Novagraph Chartist File (Flowcharting, Organization Charting)
ZSNES Cheat Code (Super Nintendo emulator)
ICQ Saved Chat Session
Generations Family Tree Chart
.CHU Infinity Game Engine GUI Elements File
(list of windows and window controls) [More Info]
.CI CitectSCADA File
.CIF Ventura Chapter Information
CalTech Intermediate Graphic
Easy CD Creator Image [IsoBuster Data Recovery Tool]
pcAnywhere Caller File
Ventura Converted Image File
Colombo Ipermedia File
Chip Layout Information
Crystallographic Information File
.CIG Fastback Plus Compressed Backup [Data Recovery Company]
.CIL Clip Gallery Download Package
.CIM SimCity 2000 File
CompuApps Drive Backup Image
CIMEX Cimpack Design Drawing File
GE Industrial Systems CIMPLICITY HMI Screen
(CIMPLICITY is GE Fanuc's Human Machine Interface product)
.CIN OS/2 Change Control File
Cinetitler Digital Screen Subtitling
Kodak Cineon [XnView]
Photo-Sonics Picture Sequence [Edit with FalCon eXtra]
.CIP Ghost Keylogger File
.CIR SuperMax E-CAD Save-File Command
PSpice File
Flash Color Table
.CIS CheckInbox File
.CIT Intergraph Scanned Image [XnView]
.CIV Empire Earth Custom Civilization Information
.CIX TCU Turbo C Utilities Database Index
.CK1 iD/Apogee Commander Keen 1 Data File (.CK1 to .CK6)
.CKB Borland C++ Keyboard Mapping File
.CKD CADKEY Design File (ver 20 and above) [Viewer]
.CKP Ingres Checkpoint File
.CKT Crocodile Clips (Electronic design/physics)
CADKEY Template File
.CL Generic LISP Source Code
.CL3 Easy CD Creator Layout File
Bruker Aspect NMR Data File
.CL4 Easy CD Creator Layout File
.CL5 Easy CD Creator Layout File
.CLA Java Class File (usually .CLASS but can be shortened)
CLARION for DOS
.CLASS Java Class File
.CLB ICQ Contact List
Microsoft Office XP Developer Code Librarian
cdrLabel Compact Disc Label
.CLD Skerryvore Software Simply Calenders
.CLF ListPro File
.CLG Disk Catalog Database
Maxagrid CTM Log File (text format)
.CLK Corel R.A.V.E. Animation File
.CLL Crick Software Clicker File
OzWin CompuServe E-mail/Forum Access Custom Library Search
.CLN Backup Configuration Files (Clean files)
[Used by some versions of Windows during install]
SHL Calendar Utility (in Beta Oct 2002)
.CLO Cloe Ray-Tracer [XnView]
.CLOE Cloe Ray-Tracer [XnView]
.CLP Windows Clipboard/Picture [IrfanView]
Quattro Pro Clip Art
CLIPS/wxCILPS File (C Language Integrated Production System)
Clipper 5 Compiler Script
PC Paint/Pictor Page [XnView]
GoDot [XnView]
.CLR WinEdit Colorization Word List
1st Reader Binary Color Screen Image
PhotStyler Color Definition
FileMaker Spelling Dictionary
.CLS Visual Basic Class Module
C++ Class Definition
ArcView Geocoding Classification File
.CLV Aladdin Knowledge Systems Vbox Current Language File (software distribution)
.CLW Microsoft Visual C++ Class Wizard File
CLARION Database (DOS & Windows) [CLARION Magazine]
.CLX Macro ToolsWorks Macro
.CM Craftman Data File
.CM2 Curious Labs Poser Camera File
.CM4 ClipMate Data File
.CMA Applix TM1 Database File (text)
Filetopia Collection Manager List (ASCII format - .CML is binary format)
.CMB Chromeleon Backup Archive
.CMC PowerFront File (part of ShopMind)
.CMD OS/2, WinNT Command File
DOS CP/M Command File
dBase II Program File
1st Reader External Command Menu
.CMF Creative Music File
Corel Metafile
.CMG Chessmaster Saved Game
.CMK Card Shop Plus File
.CML Cheat Machine Library File (Windows)
PADGen Company Info File
Filetopia Collection Manager List (Binary format - .CMA is ASCII format)
ProWORX Nxt Comment Data (Long - Found in the NxT directory)
.CMM CEnvi (ScriptEase:Desktop) Batch File
.CMO Virtools Behavioral Server Composition
.CMP Leadview (LEAD) Bitmap (Edit with WitchColor)
Discorp CMP Image [XnView]
Open Access File
Address Document
JPEG Bitmap
CorelDRAW Postscript Printer Header
Route 66 Address Document
Microsoft Word for DOS User Dictionary
Generic CADD Component File
Technics Keyboard Composer File
SWAT 3 Compressed Sound File [Support Site]
.CMQ Culturemetrics (Personality Profile Analyser)
.CMR MediaPlayer Movie
CribMaster File (Toolcrib inventory management)
.CMS TrialDirector Compound Media Storage (Litigation Exhibit Management)
.CMT Culturemetrics (Personality Profile Analyser)
Chinon ES-1000 Digital Camera [XnView]
.CMU Carnegie Mellon Univeristy Stereo Raster Image
CMU Window Manager [XnView]
.CMV Corel Move Animation
.CMW Microsoft Custom Maintenance Wizard File
COM-Watch (data analyser)
.CMX Corel PhotoPaint Image [XnView]
Corel Presentation Exchange Image [XnView]
The Sims (Maxis) 3D Body Mesh Data
Apple Viewer File
Patch File
.CMYK Raw Cyan, Magenta, Yellow, and Black Samples
.CNC CNC General Program Data
Click 'n Create File
.CND ControlDraw File
Embroidery Design File [possibly read with Melco Sizer Software]
.CNF Configuration (various)
SpeedDial
Inor MinIpaq Software File (MinIpaq transmitter configuration software)
.CNM Windows Application Menu Options and Setup File
.CNQ Compuworks Design Shop File
.CNR CRiSP Harvest File
.CNREG EULANDA® Warenwirtschaft (ERP) Configuration Information
.CNREP EULANDA® ERP System Report Template
.CNS W2K Client Connection Manager Export File
.CNT Help File Contents (and other contents needs)
.CNV Microsoft Word Data Conversion File
WS_FTP Pro Upload Conversion File Data
WordPerfect Temporary File
Canvas versions 6, 7, 8
.CO Cult3D ActiveX Player Application
.COB COBOL Program File (also see .CBL)
Caligari Truespace Format
TrueSpace2 Object
Liant RM/COBOL Runtime System Application File (Runs RM/COBOL applications)
.COD Code List
Compiler Program Code
Multiplan Data File
dBase Template Source File
SWAT Input Control File (river basin scale model)
FORTRAN Compiled Code [FORTRAN]
Video Text File
Charset Code File
.COK Carmageddon Patch File
.COL Autodesk Color Palette
Multiplan Spreadsheet
Lotus Notes Import Column Description File
MS Movie Maker Collection File (WINDOWS MOVIE MAKER.COL)
Grand Theft Auto 3 Collision Data
.COM Command (Executable file)
.COMMANDLINE Commandline Powertoy File
.COMMON Matlab Install File
.COMPAT Likely a text file (e.g., README.COMPAT)
.CON Knowledgeware Consolidation File
Tree Professional Conifer Creator File
Simdir Configuration File
Microsoft Train Simulator Train/Model Identification File (CONSIST file)
.CONF IRC Related Configuration File (IRCDs or EggDrops)
Linux Configuration File (also UNIX)
.CONFIG Microsoft .NET Application Configuration Information
CRiSP Harvest File
.CONTENTSONCLIPBOARD Contents on Clipboard Powertoy File
.COO Fabasoft Components
.COP Tree Professional Conifer Creator Image File
.COR Protein Structure File
Web GPS Correction Server Export File
WMOVIEC Input File
Insight II Output Coordinate File
.COS Scarlett Expert System Compiler Query File (Scarlett is not presently available)
.COV Microsoft Fax Cover Page (Win2000/XP Cover Page Editor) [also see .CPE]
.CP CompuMedic Database (medical billing software)
.CP8 CP8 256 Gray Scale Image [XnView]
.CPA Colasoft Capsa (network sniffer)
.CPC CPC Lite Cartesian Perceptual Compressed File
.CPD Fax Coversheet
Corel PrintOffice File
Complaints Desk Script
.CPE Microsoft Fax Cover Sheet (Win95 Cover Page Editor) [also see .COV]
.CPF Complete Fax File
ProWORX Nxt Comment Pointer And Length File (Long - Found in the NxT directory)
.CPG 3dize® Cool Page File
.CPH Corel PrintHouse Image
.CPI Code Page Information
ColorLab Image
Calamus [XnView]
.CPJ CeQuadrant CD Project
Commotion File (compositing software tool)
.CPL Control Panel Extension
Corel Color Palette
Compel Presentation
.CPM Cisco Secure Policy Manager File
InterComm Project Manager File
ConceptHDL Project File
CP/M Executable [Cpmtools 2.1]
Mussoft Chord Pro Song Format
.CPN Microsoft Age of Empires I and II Campaign File
.CPO Corel Print House File
.CPP Borland C++ Builder 6
CA-Cricket Presents Presentation
Maya File
.CPR Corel Presents Presentation
Knowledge Access Graphics
INMOS Transputer Development System Occam Program Code Fold
PV-WAVE Compiled Procedure File (Visualization and analysis)
.CPS Antivirus Checksum File
Central Point PC Tools Backup
Colored PostScript File
Classroom Performance System File
.CPT Macintosh Compressed File
Corel Photo-Paint Image [XnView] [IrfanView]
Jasc After Shot (Image Expert 2000 taken over by Jasc from SierraImaging)
dBase Encrypted Memo
CA Cricket Presents Template
.CPT6 Corel Photo-Paint Image [IrfanView]
.CPX Control Panel Applet
Code Page Translation File
CryptaPix Encrypted Image
Corel Presentation Exchange Compressed Drawing
Microsoft Age of Empires I and II Campaign File
.CPY Copy Books Data File
Atari Ramdrive CPY Commands
Flexus COBOL Definitions
(function, element and value properties associated with a control)
Liant RM/COBOL Development System Include File
(Compiles RM/COBOL applications)
.CPZ COMPOZ Music Text
.CQQ Cool Quiz (Quiz File)
.CQZ Cool Quiz (Quiz File)
.CR CRiSP Source Code
Crack File (produced by several key generator programs)
.CR2 Curious Labs Poser Character File
.CR4 STABCAL (stability calculation for aqueous systems) File
.CR5 Tripod Data Systmes Survey Pro Coordinate File (Surveyor data collection)
.CR7 STABCAL (stability calculation for aqueous systems) File
.CRA Personal Craft Factory File (no longer supported--GraphicCorp bought by Corel)
.CRACKZBYMAB YaHoE File [crack site]
.CRD Cardfile (Windows 3.x Database)
Guitar Chord File [On-line Guitar Archive] (Usually an ASCII text file)
ColdRED Script File (ASCII file parser)
.CRE Infinity Game Engine Monster Description [More Info]
LiveUpdate Crescendo Catapult File
(encrypted MP3 that plays from delivery site only unless you purchase song)
.CRF Zortech C++ Cross-Reference File
Database Cross-Reference File
OM2Cipher Recipient File
Sierra Print Artist Craft
System Shock 2 Archive [Dragon UnPACKer]
Thief 2: The Metal Age Archive [Dragon UnPACKer]
Thief: The Dark Project Archive [Dragon UnPACKer]
.CRG Calamus [XnView]
.CRH Microsoft Golf Image File
Links Games Course File
.CRK Crack File (differences between original and cracked files)
[Need proper version of CRK.EXE to open]
.CRL Certificate Revocation List
.CRM Capital Research Vendor Bid System
Netmino File (SW under development Oct 2002)
.CRP dBase Encrypted Database
Visual dBASE Custom Report
Corel Presents Run-Time Presentation
.CRS WordPerfect 5.1 for Windows File Conversion Resource
Links Games Course File
Gold Game Course File
.CRT Certificate File
Oracle Terminal Settings Info
UNIX Crontab File (not a required extension for Crontab)
.CRU CRUSH Compressed Archive
.CRW Canon Raw Format (Image) [XnView] [ACDSee 4.0]
Crossword Genius (crossword & wordsearch puzzles)
.CRX Links Games Course File
.CRY Crypto Chat II Encrypted Notebook-content
.CRZ Links Games Course File
.CS C#.NET Source File
Sierra Tribes 2 Mission Configuration
.CS3 Casio WK-1800 Keyboard Output File
.CSA Comma Deliminated Text
Ultimate Ride Roller Coaster
InterComm ASCII Sheet File
.CSB Corel Photo-Paint Script
CircuitSoft Viewer (a module of EMSI Complete) - (Unverified)
.CSC Corel Script
.CSD Bitstream Fontware File
Chemsoft® MSDS Database File
Embroidery Design File [possibly read with Melco Sizer Software]
.CSE Cardinal Studio Template File (iTV Application Development Tool)
.CSF Van Dyke's CRT/SecureCRT Script File
GeoMedia Coordinate System File
.CSG Statistica Graph File
.CSH Hamilton Labs C Shell Script File
CARA-Script-Interpreter-Engine Script (4th generation database language)
PhotoShop Custom Shape
.CSHRC UNIX C Shell Environment File
.CSI Cyberautograph Signed Item
.CSK Claris Works
.CSM Borland C++ Symbol File
Borland C++ 4.5 Precompiled Header
Kodak DC265 Camera Script
.CSN Dreamweaver MX's Snippet
.CSP PC Emcee On-Screen Image
CaseWare Working Papers Script Page
Intersystems Cachй Server Page File
Crystal Enterprise Crystal Server Page (script language)
Cardinal Studio Project File (iTV Application Development Tool)
Corel Draw Service Bureau Profiler
.CSQ Foxpro Queries
.CSS Hypertext Cascading Style Sheet
Stats+ Datafile
Statistica Datasheet
InterComm Part Body Definition
.CST Macromedia Director Cast File
Technics Sx KN 6000 Keyboard Custom Style File
.CSV Comma-Separated Variables
CompuShow Adjusted EGA/VGA Palette
.CSW WordPerfect Setup Info File
.CT Scitex CT Handshake Bitmap [XnView]
Iris CT Graphic [XnView]
.CT0 Maxagrid CTM File Being Processed (text format)
.CT1 Maxagrid CTM File Successfully Processed (text format)
.CT2 Maxagrid CTM File Unsuccessfully Processed (text format)
.CTB NoteTab Clipbar
AutoCAD Color-dependent Plot Style Table
.CTC PC Installer Control
.CTD Cobra Track Dump (COmBined Reconstruction for Atlas)
Cardtable File (text file)
Marine Data File (e.g., automatic float data)
Simpsons Cartoon Studio Export File
.CTF TIFF Compressed File
WhereIsIt Catalog
Symphony Character Code Translation
MGI PhotoSuite 1.0/8.0 Album File
Calculator Text Format
HP-95LX Character Translation File for Datacomm
AVG Update Control File (Anti-virus software.)
.CTG Cartridge Definition File
ChessBase Opening Book
Canon Powershot Pro 70 Info File
BMC Software Patrol File
.CTL Setup Information (various)
User Control (various)
.CTM FreeBSD Content Management File
Java Charge Transaction Matrix File
Crazytalk Talking Animation File
Maxagrid CTM File (text format)
SDR99 Speech Recognition Task Time Marked Conversation Input
Content Delivery Service (Web site pending as of Feb 2002)
.CTP American Greetings Greeting Cards
ChemDraw Template
.CTT MSN Messenger List of E-mail Contacts
LabView File
.CTX Compressed Text
Visual Basic User Control Binary File
Pretty Good Privacy (PGP) Ciphertext File
Microsoft Online Course Text
Microsoft Windows Terminal Server INI Backup File
Chinese Character Input File
LICOM AlphaCAM Compiled Text
GE Industrial Systems CIMPLICITY Text Version HMI Screen
(CIMPLICITY is GE Fanuc's Human Machine Interface product)
.CTY SimCity City File
Fog Creek CityDesk Template (Web publishing)
.CUB OLAP Cube File (definition for SQL Server,
any OLE DB, or ODBC-compliant database)
.CUE Microsoft Cue Cards Data
Description File for a CD-Image [Fireburner.com or
Goldenhawk.com] or [Fantom CD Emulator]
IsoBuster File
.CUF Turbo C Utilities Form Definition
.CUL IconForge/ImageForge Cursor Library
.CUP OzWin CompuServe E-mail/Forum Access Catalog Library Update
.CUR Cursor Microangelo [IrfanView]
.CURSOR Sun Icon/Cursor [XnView]
.CURXPTHEME Cursor XP File (changes look & function of mouse cursor)
.CUS AutoCAD Custom Dictionary File
.CUT Dr. Halo Bitmap Graphic [XnView]
INMOS Transputer Development System Occam Utility Package
Utilitaires (multiple utilities)
DataWave Physiological Data File
.CUZ CropWalker (agriculture software)
.CV Corel Versions Archive
Microsoft CodeView Information
.CV3 Civilization III Game High Score
.CV4 Codeview Colors
.CV5 Canvas version 5
.CVA Compaq Diagnostics
.CVB Borland BDE File
.CVF Microsoft Train Simulator Cab View File
Compressed Volume File
.CVG Image File
.CVP WinFax Cover Page
Portrait [XnView]
.CVR WinFax Cover Sheet
ElectraSoft Fax Cover Sheet
.CVS Canvas Drawing File
Outlook Express File
Sound File [Linux Player]
.CVT dBase Converted Database
.CVW Codeview Colors
.CW3 Crossword Construction Kit Puzzle Group
Claris Works Win 3 Document (now Filemaker)
Chem Draw Molecular Structure (Lewis structures, orbitals and lab apparatuses)
.CWB WebNote Document
.CWD StarDraft CWAD File (StarCraft Editor)
.CWE Crossword Express
.CWF Liant CodeWatch for Windows Workspace File
(Development environment for RM/COBOL programs)
.CWK Claris Works Data also see AppleWorks
Graphicode GCPrevue Work File
.CWP Cakewalk SONAR Audio Project
.CWS Claris Works Template also see AppleWorks
.CWW Crossword Weaver File
.CWZ CropWalker File (Agricultural crop recording)
.CXE Common XML Envelope
.CXM XYZ-Company.com Proprietary File (transfer image and color information)
QuadColor Color Correction Master
.CXP XYZ-Company.com Proprietary File (transfer corrected color information)
Core Media Player XML-based Playlist File
.CXT Macromedia Director Protected Cast File
Vegas Jackpot Gold Game Data File
.CXX Zortech C++ Program
.CYA Adobe Cyan Color Separation (also see .BLA, .MAG, .YEL)
.CYL Ribbons Molecular Cylinder (Molecular graphics software)
.CYM Callus Sound File (Bloodlust Software game) (WinAmp Plug-in Site)
.CYN Cynex Root55 Program Extension
.CYP Cypherus Encrypted Archive