: C

.c
C/C++ Source Code File N/A
.c00
WinAce Split Archive File e-merge
.c01
WinAce Split Archive Part 1 File e-merge
.c02
WinAce Split Archive Part 1 File e-merge
.c10
WinAce Split Archive Part 10 E-merge
.c2d
WinOnCD Disc Image Roxio
.c2r
Windows Media Center Click-To-Record File Microsoft
.c2u
Texas Instruments CBL 2 OS File Texas Instruments
.c32
Syslinux COM32 Module Syslinux
.c3d
Coordinate 3D File N/A
.c3z
OpenQwaq 3D Model File OpenQwaq
.c4
JEDMICS Image File JEDMICS
.c4d
Cinema 4D Model File MAXON Computer
.c4k
Clonk Key File RedWolf Design
.c4p
CrossOver Software Installer File Codeweavers
.ca
Initial Telnet Cache N/A
.caa
CleanApp Archive Synium Software
.cab
Windows Cabinet File Microsoft
.cache
Cache File N/A
.caction
Automator Converter Action Apple
.cad
BobCAD-CAM File BobCAD-CAM
.cadc
Corpatla Data Container File Corpatla
.caf
Core Audio File Apple
.caff
Core Audio File Apple
.cag
ClipArt Gallery Package Microsoft
.cal
3ds Max Pose Adjustment File Autodesk
.calb
Coolect Album File Coolect
.calibre
Calibre Device Data File Calibre
.cals
CALS Raster Graphic File N/A
.cam
Gerber CAM Job File N/A
.camm
Espresso Mind Map Document Corpatla
.camp
WCS Color Appearance Model Profile File Microsoft
.camproj
Camtasia Studio Project TechSmith
.camrec
Camtasia Studio Screen Recording TechSmith
.camv
Camtasia Video File TechSmith
.can
Canon Navigator Fax Document Canon
.cap
Packet Capture File N/A
.caproj
Construct Project File Scirra
.capx
Construct Compressed Project File Scirra
.car
Car Explorer Data File N/A
.carc
Nintendo DS Compressed Archive File Nintendo
.cas
Autodesk Cascade License File Autodesk
.case
SlipCover Case Template Bohemian Coding
.cat
Windows Catalog File Microsoft
.catpart
CATIA V5 Part File Dassault Systemes
.catproduct
CATIA V5 Assembly File Dassault Systemes
.cav
Comodo Virus Definitions File Comodo Group
.cawr
Espresso workreport Document Corpatla
.cb7
Comic Book 7-Zip Archive N/A
.cba
Comic Book ACE Archive N/A
.cbc
Comic Book Collection Calibre
.cbds
Comic Book DS File Nicom00k
.cbf
Calendar Builder File Tailwag Software
.cbg
ChessBase Game Moves File ChessBase
.cbh
ChessBase Database Header File ChessBase
.cbk
Backup Configuration File N/A
.cbl
COBOL Source Code File N/A
.cbp
Code::Blocks Project File Code::Blocks
.cbr
Comic Book RAR Archive N/A
.cbs
Comodo Backup Script Comodo Group
.cbt
Comic Book TAR File N/A
.cbu
Comodo Backup File Comodo Group
.cbv
ChessBase Database File ChessBase
.cbz
Comic Book Zip Archive N/A
.cc
C++ Source Code File N/A
.cca
Multimedia Fusion File Clickteam
.ccd
CloneCD Disc Image SlySoft
.ccf
CryptLoad Container File CryptLoad
.ccgame
XNA Creators Club Game Package Microsoft
.cch
.NET Security Resolution Cache File Microsoft
.ccip
Curse Client Install Package Curse
.ccn
Compressed Multimedia Fusion File Clickteam
.ccp
CodeCharge Studio Page File YesSoftware
.ccr
ASTM Continuity of Care Record ASTM
.ccs
CodeCharge Studio Project File YesSoftware
.ccscc
ClearCase Source Control Info File IBM
.cct
Director Protected Cast Resource Adobe Systems
.ccx
Click & Create Extension Clickteam
.cd
Visual Studio Class Diagram Microsoft
.cda
CD Audio Track Shortcut N/A
.cdb
Symbian Phonebook Database Nokia
.cdc
AutoCAD DesignCenter Preview Cache File Autodesk
.cdd
ConceptDraw PRO Document Computer Systems Odessa
.cdda
CD Digital Audio File N/A
.cddx
Circuit Diagram Document Circuit Diagram
.cdf
Computable Document Format File Wolfram Research
.cdf-ms
ClickOnce Compiled Manifest File Microsoft
.cdg
Compact Disc Plus Graphics Image N/A
.cdi
DiscJuggler Disc Image Padus
.cdl
CADKEY Wireframe Design File Kubotek
.cdlx
Audition CD Layout File Adobe Systems
.cdm
NTI CD-Maker Image NTI
.cdmm
ConceptDraw MINDMAP Document Computer Systems Odessa
.cdmp
WCS Device Model Profile Microsoft
.cdmt
ConceptDraw MINDMAP Template Computer Systems Odessa
.cdmtz
Compressed ConceptDraw MINDMAP Template Computer Systems Odessa
.cdmz
Compressed ConceptDraw MINDMAP Document Computer Systems Odessa
.cdo
Crescendo Music Notation File NCH Software
.cdp
Trainz Simulator Content Dispatcher Pack N3V Games
.cdp2
Trainz Classics Content Dispatcher Pack 2 N3V Games
.cdpx
ConceptDraw PROJECT XML File CS Odessa
.cdpz
ConceptDraw PROJECT Document CS Odessa
.cdr
CorelDRAW Image File Corel
.cdt
CorelDRAW Image Template Corel
.cdw
KOMPAS Document ASCON
.cdx
Compound Index File Microsoft
.cdxml
ChemDraw XML File CambridgeSoft
.cdz
Compressed CD Image File N/A
.ce
ComputerEyes Image Digital Vision
.ceb
Apabi eBook File Apabi
.ced
JVC Camera Video Data File N/A
.cedprj
Ashampoo CoverEditor Project Ashampoo
.cef
CenturionMail Encrypted Package CenturionSoft
.cel
Affymetrix Probe Results File Affymetrix
.celtx
Celtx Project File Celtx
.celx
Celestia Script Celestia Development Team
.cem
Children of the Nile Model File Tilted Mill Entertainment
.cer
Internet Security Certificate N/A
.cex
SolidWorks Enterprise PDM Vault Export File Dassault Systemes
.cf
Sendmail Configuration File N/A
.cf2
Common File Format File N/A
.cfa
Adobe Conformed Audio File Adobe Systems
.cfc
ColdFusion Component File Adobe Systems
.cff
Common File Format N/A
.cfg
Configuration File N/A
.cfge
Jewel Quest Configuration File iWin
.cfl
IMVU Product File IMVU
.cfm
ColdFusion Markup File Adobe Systems
.cfml
ColdFusion Markup Language File Adobe Systems
.cfr
Cross Fire Replay File Z8Games
.cfs
Compact File Set Archive Pismo Technic
.cfxr
Cocoa Sfxr File cfxr
.cg
Cg Program NVIDIA
.cg3
Cabri 3D Document CABRILOG
.cga
Crytek Geometry Animation File Crytek
.cgf
Crytek Geometry Format File Ubisoft
.cgfx
CgFX Shader File NVIDIA
.cgi
Common Gateway Interface Script N/A
.cgm
Computer Graphics Metafile N/A
.cgp
PixelCryptor Encrypted File CodeGazer
.cgr
CATIA Graphical Representation File Dassault Systemes
.cgrp
Pro Tools Clip Group File Avid Technology
.cgz
Linux Drivers Archive N/A
.ch3
Harvard Graphics DOS Chart File Harvard Graphics
.cha
IRC Chat Configuration File N/A
.cham
Compiled HAM File Zaplots
.charset
Character Set N/A
.chart
Feedback Chart File TurkeyMan
.chat
IRC Chat Configuration File N/A
.chc
HCFR Colorimeter Data File HCFR Mag
.chd
MAME Hard Disk Image The MAME Team
.chef
Chef Source Code File David Morgan-Mar
.chesstitanssave-ms
Microsoft Chess Titans Saved Game Microsoft
.chg
Windows Net Logon File Microsoft
.chk
Saved File Fragment Microsoft
.chl
WinFast PVR2 Channel List Leadtek Research
.chm
Compiled HTML Help File Microsoft
.chml
Chameleon Encrypted Database File Krasbit Technologies
.chn
Ethnograph Data Qualis Research Associates
.chord
Song Chords File N/A
.chr
3ds Max Characters File Autodesk
.chrparams
CryENGINE Character Parameters File Crytek
.chs
Windows Chinese Noise-Word List File Microsoft
.cht
SNES Cheat File N/A
.chunk001
File Splitter Split Archive Part 1 Filesplitter.org
.chv
ChView Interactive Star Map File ChGroup
.chw
Compiled Help Index File Microsoft
.chx
AutoCAD Standards Check File Autodesk
.ci
Windows Content Indexer Catalog File Microsoft
.cidb
iTunes CD Information File Apple
.cif
Easy CD Creator Disk Image Corel
.cil
Clip Gallery Packaged File Microsoft
.cimg
CImg Image File CImg
.cin
Kodak Cineon Bitmap File Kodak
.cine
Phantom Digital Video File Vision Research
.cip
Cavena Subtitles File Cavena
.circuit
KTechlab Circuit Design File KTechlab
.cit
Intergraph Bitmap Image File Intergraph
.civ5save
Civilization 5 Saved Gae Take-Two Interactive Software
.ckb
Cricket Audio Bank File Cricket Technology
.ckbx
Cricket Audio XML Bank Description File Cricket Technology
.ckd
Kubotek Design Container Kubotek
.ckf
Casio Keyboard File Casio
.ckp
SQL Server Checkpoint File Microsoft
.ckt
CircuitMaker File Altium
.cl
Cursor Library Aha-Soft
.cl2
HY-TEK Meet Results File HY-TEK Sports Software
.cl2arc
Comic Life 2 Document Archive Plasq
.cl2doc
Comic Life 2 Document Plasq
.cl2lyt
Comic Life 2 Layout File Plasq
.cl2tpl
Comic Life 2 Template Plasq
.cl4
Easy CD Creator 4 Project File Sonic Solutions
.cl5
Easy CD Creator 5 Saved Project Roxio
.clarify
Clarify Document Blue Mango Learning Systems
.class
Java Class File Oracle
.classlist
SMART Notebook Class List File SMART Technologies
.clb
COM+ Catalog File Microsoft
.cld
Canon CD Label Template Canon
.cleo
CLEO Grand Theft Auto Mod File CLEO
.clg
Windows Catalog File Microsoft
.clips
Coda Clips File Panic
.clix
CLIX Command File Rixstep
.clk
Corel R.A.V.E Project File Corel
.clkk
Clicker Keyboard Crick Software
.clkt
Clicker Template Crick Software
.clkw
Clicker Word Bank Crick Software
.clkx
Clicker Grid Set Crick Software
.clm
MagicJack Call Log File YMAX
.clp
CrazyTalk Clip File Reallusion
.clpi
Blu-ray Clip Information File Blu-ray Disc Association
.clr
Flash Color Set Adobe Systems
.cls
LaTeX Document Class File N/A
.clt
Clarity Legal Transcript File Clarity Legal
.clw
Visual C++ ClassWizard File Microsoft
.clx
Standard Dictionary File Adobe Systems
.cm
CLEO Custom Mission Rockstar Games
.cm10
CaseMap 10 Case File LexisNexis
.cm2
Poser Camera Set File Smith Micro
.cma
TM1 Exported Cube File IBM
.cmap
CmapTools Concept Map File IHMC
.cmbl
Logger Pro Data File Vernier Software & Technology
.cmd
Windows Command File Microsoft
.cme
Crazy Machines Experiment File Viva Media
.cmf
Cal3D Binary Mesh File Cal3D
.cml
Chemical Markup Language File N/A
.cmm
Corel Multimedia Manager Album Corel
.cmmp
Camtasia MenuMaker Project TechSmith
.cmmtheme
CleanMyMac Theme File MacPaw
.cmmtpl
Camtasia MenuMaker Template TechSmith
.cmod
Celestia Model Celestia Development Team
.cmp
HotDocs Clause Component File HotDocs
.cmproj
Camtasia Project File TechSmith
.cmrec
Camtasia Recording TechSmith
.cms
Connection Manager Service Profile Microsoft
.cmx
Corel Metafile Exchange Image File Corel
.cmz
Compressed Poser Camera Set File Smith Micro
.cn1
CNR Modem Initialization Data File MITRE
.cna
Catena Project File OpEx Software
.cnc
PartMaster CNC File Dolphin Cad Cam
.cnd
Melco Condensed Embroidery File Melco
.cndx
Avery DesignPro for Mac Label File Avery
.cnf
MySQL Configuration File MySQL
.cng
CryptoNG Encrypted Archive Vassil Arabadjiev
.cnm
NoteMap Outline File LexisNexis
.cns
M.U.G.E.N. Character States File Elecbyte
.cnt
Help Contents File Microsoft
.cnv
Canvas 6-8 Drawing File ACD Systems
.cob
COBOL Source Code File N/A
.cod
Compiled Source Code N/A
.codaplugin
Coda Plug-in Panic
.codasite
Coda Site File Panic
.cof
MPLAB COFF File Microchip Technology
.coffee
CoffeeScript JavaScript File N/A
.col
Capture One Session File Phase One
.collection
Adobe Bridge Collection File Adobe Systems
.colorpicker
Color Picker Plugin Apple
.colz
Adobe Collage File Adobe Systems
.com
DOS Command File Microsoft
.comfycakessave-ms
Comfy Cakes Saved Game Microsoft
.comicdoc
Comic Life Document Plasq
.command
Terminal Command File Apple
.component
Mac OS X System Component N/A
.compositefont
Windows Composite Font File Microsoft
.compressed
WordCompress Compacted Web File WordCompress
.con
Concept Application Source File RadGs
.conf
Unix Configuration File N/A
.config
Configuration File N/A
.configprofile
Apple Configuration Profile Apple
.conform
Conformalizer Change List File Maggot Software
.contact
Windows Contact File Microsoft
.contour
Contour Screenplay File Mariner Software
.controls
OpenBVE Keyboard Shortcuts File OpenBVE
.copreset
Capture One Preset File Phase One
.copy
Sony Ericsson Protected Content File N/A
.cor
CorelDRAW Drawing Corel
.cos
Capture One Settings File Phase One
.cos2
Pinnacle Studio Cache File Pinnacle Systems
.costyle
Capture One Style File Phase One
.cov
Fax Cover Page File Microsoft
.cox
Click & Create Extension Clickteam
.cp
Xcode C++ Source File Apple
.cp3
Grand Prix 3 Cockpit Shape File Microprose
.cp9
ChoicePoint Encrypted File N/A
.cpa
CADSTAR PCB Archive File Zuken
.cpb
Comicino Studio Project File Comicino Media
.cpbitmap
iOS Wallpaper Image Apple
.cpc
CPC Compressed Image File Cartesian Products
.cpd
RoboHelp Cache Project Database Adobe Systems
.cpe
Fax Cover Page File Microsoft
.cpf
Cognos Project File IBM
.cpg
Manga Studio Page File Smith Micro
.cpgz
Compressed CPIO Archive N/A
.cph
Corel Print House File Corel
.cpi
AVCHD Video Clip Information File Sony
.cpio
Unix CPIO Archive N/A
.cpk
DTM Test Log File Microsoft
.cpl
Windows Control Panel Item Microsoft
.cpmz
Miradi/ConPro Project File Benetech
.cpn
Age of Mythology Campaign File Microsoft
.cpp
C++ Source Code File N/A
.cpq
Compaq OEM Disc Configuration File Compaq
.cpr
Cubase Project Steinberg Media Technologies
.cps
Corel Photo House File Corel
.cpt
Corel Photo-Paint Document Corel
.cptl
Adobe Captivate Project Template File Adobe Systems
.cptx
Adobe Captivate Project File Adobe Systems
.cpx
Oracle ADF Binding Context File Oracle
.cpy
3ds Max Copy Track File Autodesk
.cr2
Canon Raw Image File Canon
.craft
KSP Spacecraft File Squad
.crash
Mac OS X Crash Log File Apple
.crashed
AbiWord Crash-Saved Document AbiSource
.crc
Total Commander Checksum File Ghisler Software
.crd
Windows CardSpace File Microsoft
.crdownload
Chrome Partially Downloaded File Google
.crds
Windows CardSpace Backup File Microsoft
.crev
Adobe Captivate Commentable SWF File Adobe Systems
.crf
Cal3D Binary Materials File Cal3D
.crl
Certificate Revocation List File N/A
.crs
StepMania Course File StepMania
.crt
Security Certificate N/A
.crtr
MultiAd Creator Pro Document MultiAd
.crtx
Office 2007 Chart Template File Microsoft
.crv
VCarve Pro Design File Vectric
.crw
Canon Raw CIFF Image File Canon
.crwl
Windows Crawl File Microsoft
.crx
Chrome Extension Google
.cry
CryENGINE Map File Crytek
.crypted
WinOptimizer Encrypted File Ashampoo
.cryptra
Cryptra Encrypted File BMB Software
.crysisjmsf
Crysis Saved Game Crytek
.crysispsf
Crysis Warhead Saved Game Crytek
.crz
Compressed Poser Character Rigging File Smith Micro
.cs
Visual C# Source Code File Microsoft
.csa
PNA Code Calset File Agilent
.csaplan
SPSS Analysis Plan File IBM
.csd
Compact Shared Document Dream To Reality
.csf
Content Sealed Format Informative Graphics
.csh
Photoshop Custom Shapes File Adobe Systems
.cshtml
ASP.NET Razor Web Page Microsoft
.csi
ContentServ Include File ContentServ
.cskin
CD Art Display Skin File CD Art Display
.csl
CineStyle Color Lookup File Technicolor
.csm
Character Studio Marker File Autodesk
.csn
Adobe Code Snippet Document Adobe Systems
.cso
Compressed ISO Disk Image N/A
.csp
Caché Server Page InterSystems
.csplan
SPSS Sampling Plan File IBM
.csproj
Visual Studio C# Project Microsoft
.csr
Certificate Signing Request File N/A
.css
Cascading Style Sheet N/A
.cst
Manga Studio Story File Smith Micro
.csv
Comma Separated Values File N/A
.csx
Visual C# Script Microsoft
.csy
Canvas Symbol File ACD Systems
.ct
Cheat Engine Cheat Table Cheat Engine
.ctb
AutoCAD Color-Based Plot Style File Autodesk
.ctbodyfitting
CrazyTalk Animator Actor Fitting File Reallusion
.ctf
AVG Update Control File AVG Technologies
.ctg
Canon Digital Camera Catalog File Canon
.ctl
Visual Basic UserControl Object File Microsoft
.ctm
CrazyTalk Model File Reallusion
.ctp
CakePHP Template Cake Software Foundation
.ctproject
CrazyTalk Animator Project File Reallusion
.cts
CrazyTalk Script File Reallusion
.ctt
Messenger Contact List Microsoft
.ctv
Citavi Project Swiss Academic Software
.ctv3
Citavi 3 Project File Swiss Academic Software
.ctx
Valve ICE Encoded Script Valve
.ctxt
BlueJ Context File University of Kent
.cty
SimCity City File Maxis
.cu
CUDA Source Code File NVIDIA
.cub
Analysis Services Cube File Microsoft
.cue
Cue Sheet File N/A
.cui
Autodesk Custom Workspace File Autodesk
.cuix
AutoCAD Custom User Interface File Autodesk
.cul
Windows Cursor Library N/A
.cur
Windows Cursor N/A
.cursorfx
CursorFX Theme File Stardock
.curxptheme
CursorXP Theme File Stardock
.cus
AutoCAD Custom Dictionary File Autodesk
.cut
Dr. Halo Bitmap Image File N/A
.cv5
Canvas 5 Drawing File ACD Systems
.cva
HP Systems Software Manager Information File Hewlett-Packard
.cvc
cVideo N/A
.cvd
ClamAV Virus Definitions File Sourcefire
.cvf
CPU-Z Validation File CPUID
.cvg
Calamus Vector Graphic File invers
.cvi
Canvas Image File ACD Systems
.cvn
CineVision Encoding Session Sonic Solutions
.cvr
Microsoft Crash Report File Microsoft
.cvs
Canvas 3 Drawing File ACD Systems
.cvt
Canvas External Tool File ACD Systems
.cvw
CaseView Document CaseWare
.cvx
Canvas Drawing File ACD Systems
.cw
CardWorks Template NCH Software
.cwb
Cakewalk Bundle Cakewalk
.cwf
CorelDRAW Workspace File Corel
.cwk
ClarisWorks Document Apple
.cwp
Cakewalk SONAR Project Cakewalk
.cws
Claris Works Template Apple
.cwt
ClarisWorks Texture File ClarisWorks
.cww
Crossword Weaver Puzzle File Variety Games
.cwz
Circuit Wizard File New Wave Concepts
.cx3
CMS Recorded Video File IDView
.cxd
SimplePCI Data Document Hamamatsu Photonics
.cxf
Picasa Collage File Google
.cxp
CX-Programmer Project File OMRON
.cxt
Director Protected Cast File Adobe Systems
.cxx
C++ Source Code File N/A
.cyberducklicense
Cyberduck Donation Key Cyberduck
.cyberduckprofile
Cyberduck Connection Profile Cyberduck
.cyi
Clustify Input File Hot Neuron
.cyo
Clustify Output File Hot Neuron
.cyp
Home Designer Pro Project File Chief Architect
.cys
Cytoscape Session File Cytoscape
.cyw
Rbot.CYW Worm File N/A
.czd
CAD Zone Drawing The CAD Zone
.czi
Carl Zeiss Image Data File Carl Zeiss
.czip
ZipGenius CryptoZip File WinInizio Software
.czp
ClozePro Archive Crick Software