File types with extensions that start with the letter C

File Extention	File Type	Description
.c	Developer	C/C++ Source Code File
.c	Developer	Lite-C Script
.c00	Compressed	WinAce Split Archive File
.c01	Compressed	WinAce Split Archive Part 1 File
.c01	Audio	Typhoon Wave Audio File
.c02	Compressed	WinAce Split Archive Part 1 File
.c10	Compressed	WinAce Split Archive Part 10
.c2d	Disk Image	WinOnCD Disc Image
.c2r	Settings	Windows Media Center Click-To-Record File
.c2u	Misc	Texas Instruments CBL 2 OS File
.c32	System	Syslinux COM32 Module
.c3d	Data	Coordinate 3D File
.c3z	3D Image	OpenQwaq 3D Model File
.c4	Raster Image	JEDMICS Image File
.c4d	3D Image	Cinema 4D Model File
.c4k	Game	Clonk Key File
.c4p	Data	CrossOver Software Installer File
.ca	Misc	Initial Telnet Cache
.caa	Backup	CleanApp Archive
.cab	System	Windows Cabinet File
.cache	Misc	Cache File
.caction	Executable	Automator Converter Action
.cad	CAD	BobCAD-CAM File
.cadc	Data	Corpatla Data Container File
.caf	3D Image	Cal3D Binary Animation File
.caf	Developer	CryENGINE Character Animation File
.caf	Audio	Core Audio File
.caf	Data	Class Action Gradebook File
.caff	Audio	Core Audio File
.cag	Vector Image	ClipArt Gallery Package
.cal	Page Layout	Calendar File
.cal	3D Image	3ds Max Pose Adjustment File
.cal	3D Image	CryENGINE Character Animation List
.cal	Raster Image	CALS Raster Graphic
.calb	Misc	Coolect Album File
.calibre	Misc	Calibre Device Data File
.cals	Raster Image	CALS Raster Graphic File
.cam	CAD	Gerber CAM Job File
.cam	Raster Image	CASIO Digital Camera Picture File
.camm	Data	Espresso Mind Map Document
.camp	Settings	WCS Color Appearance Model Profile File
.camproj	Video	Camtasia Studio Project
.camrec	Video	Camtasia Studio Screen Recording
.camv	Video	Camtasia Video File
.can	Raster Image	Canon Navigator Fax Document
.cap	Data	Packet Capture File
.cap	Developer	Construct Game Development File
.caproj	Developer	Construct Project File
.capx	Data	Capella CapXML File
.capx	Developer	Construct Compressed Project File
.car	Compressed	CAR Archive
.car	Data	Car Explorer Data File
.car	Developer	Brew Component Application Resource File
.carc	Game	Nintendo DS Compressed Archive File
.cas	Misc	Autodesk Cascade License File
.cas	3D Image	Total War Model File
.case	Settings	SlipCover Case Template
.cat	Database	Advanced Disk Catalog Database
.cat	System	Windows Catalog File
.catpart	CAD	CATIA V5 Part File
.catproduct	CAD	CATIA V5 Assembly File
.cav	Data	Comodo Virus Definitions File
.cawr	Data	Espresso workreport Document
.cb7	Compressed	Comic Book 7-Zip Archive
.cba	Compressed	Comic Book ACE Archive
.cba	Developer	CryENGINE Resource Compiler Settings File
.cbc	eBook	Comic Book Collection
.cbds	Misc	Comic Book DS File
.cbf	Page Layout	Calendar Builder File
.cbf	Game	ChessBase Game Information File
.cbg	Data	ChessBase Game Moves File
.cbg	Data	CyberGauge Data File
.cbh	Game	ChessBase Database Header File
.cbk	Backup	Backup Configuration File
.cbl	Developer	COBOL Source Code File
.cbmap	Data	Containment Breach Map File
.cbp	Developer	Code::Blocks Project File
.cbr	Compressed	Comic Book RAR Archive
.cbs	Game	Code Breaker PS2 Save File
.cbs	Backup	Comodo Backup Script
.cbt	Compressed	Comic Book TAR File
.cbt	Misc	Computer Based Training File
.cbu	Backup	Comodo Backup File
.cbv	Game	ChessBase Database File
.cbz	Compressed	Comic Book Zip Archive
.cbz	Data	ChessBase Encrypted Database Archive
.cc	Developer	C++ Source Code File
.cca	Data	cc:Mail Archive File
.cca	Data	Multimedia Fusion File
.ccb	3D Image	CopperCube 3D Scene
.ccbjs	Web	CopperCube JavaScript File
.ccd	Disk Image	CloneCD Disc Image
.ccf	Encoded	CryptLoad Container File
.ccgame	Developer	XNA Creators Club Game Package
.cch	Data	Corel Chart File
.cch	Misc	.NET Security Resolution Cache File
.ccip	Plugin	Curse Client Install Package
.ccn	Developer	Compressed Multimedia Fusion File
.ccp	3D Image	CopperCube JavaScript File
.ccp	Developer	CodeCharge Studio Page File
.ccp	Data	RIB Import Converter Profile
.ccr	Data	ASTM Continuity of Care Record
.ccs	Developer	CodeCharge Studio Project File
.ccscc	Developer	ClearCase Source Control Info File
.cct	Data	Director Protected Cast Resource
.ccx	Vector Image	Corel Clipart File
.ccx	Plugin	Click & Create Extension
.cd	Disk Image	CD-i OptImage
.cd	Developer	Visual Studio Class Diagram
.cd2	Page Layout	Click'N Design 3D File
.cd5	Raster Image	Chasys Draw Image File
.cda	Audio	CD Audio Track Shortcut
.cdb	Database	Pocket Access Database
.cdb	Database	CardScan Contacts Database
.cdb	Database	Symbian Phonebook Database
.cdc	Raster Image	AutoCAD DesignCenter Preview Cache File
.cdd	Vector Image	ConceptDraw PRO Document
.cdda	Audio	CD Digital Audio File
.cddx	CAD	Circuit Diagram Document
.cdf	Page Layout	Computable Document Format File
.cdf	Data	Content Definition File
.cdf	Data	NetCDF Format File
.cdf	Web	Channel Definition Format
.cdf	Data	Nominal Small Business Accounting Company Data File
.cdf	Data	Common Data Format
.cdf	Developer	CryENGINE Character Definition File
.cdf	Data	Affymetrix Chip Definition File
.cdf-ms	Misc	ClickOnce Compiled Manifest File
.cdg	Raster Image	Compact Disc Plus Graphics Image
.cdi	Disk Image	DiscJuggler Disc Image
.cdi	Data	INTEX Output File
.cdl	CAD	CADKEY Wireframe Design File
.cdl	Plugin	ConceptDraw PRO Library File
.cdlx	Audio	Audition CD Layout File
.cdm	Disk Image	NTI CD-Maker Image
.cdmm	Vector Image	ConceptDraw MINDMAP Document
.cdmp	System	WCS Device Model Profile
.cdmt	Vector Image	ConceptDraw MINDMAP Template
.cdmtz	Vector Image	Compressed ConceptDraw MINDMAP Template
.cdmz	Vector Image	Compressed ConceptDraw MINDMAP Document
.cdo	Audio	Crescendo Music Notation File
.cdp	Data	ConceptDraw PROJECT File
.cdp	Game	Trainz Simulator Content Dispatcher Pack
.cdp	Data	CD/Spectrum Pro File
.cdp2	Game	Trainz Classics Content Dispatcher Pack 2
.cdpx	Data	ConceptDraw PROJECT XML File
.cdpz	Data	ConceptDraw PROJECT Document
.cdr	Data	Crash Data Retrieval Data File
.cdr	Disk Image	Macintosh DVD/CD Master
.cdr	Vector Image	CorelDRAW Image File
.cdr	Audio	Raw Audio CD Data
.cdt	Settings	CorelDRAW Image Template
.cdt	Vector Image	ConceptDraw PRO Template
.cdt	Disk Image	CD-Text File
.cdw	CAD	KOMPAS Document
.cdx	Developer	Alpha Five Table Index File
.cdx	Data	Compound Index File
.cdx	Vector Image	ConceptDraw PRO XML Document
.cdx	Vector Image	CorelDRAW Compressed File
.cdx	Data	ChemDraw Exchange File
.cdxml	Developer	Cmdlet Definition XML File
.cdxml	Data	ChemDraw XML File
.cdz	Compressed	Compressed CD Image File
.ce	Raster Image	ComputerEyes Image
.ceb	eBook	Apabi eBook File
.ced	Video	JVC Camera Video Data File
.cedprj	Page Layout	Ashampoo CoverEditor Project
.cef	Encoded	CenturionMail Encrypted Package
.cef	Data	Class Action Gradebook Elementary File
.cel	CAD	MicroStation Cell Library
.cel	Video	FLIC Animation
.cel	Data	Battery 3 Drum Cell File
.cel	Audio	Audition Loop
.cel	Executable	Celestia Script File
.cel	Data	Affymetrix Probe Results File
.celtx	Data	Celtx Project File
.celx	Executable	Celestia Script
.cem	Game	Children of the Nile Model File
.cer	Web	Internet Security Certificate
.certsigningrequest	Data	Apple Developer Signing Certificate Request File
.cex	Settings	SolidWorks Enterprise PDM Vault Export File
.cf	Settings	Sendmail Configuration File
.cf2	CAD	Common File Format File
.cfa	Audio	Adobe Conformed Audio File
.cfc	Developer	ColdFusion Component File
.cff	CAD	Common File Format
.cfg	Settings	Citrix Server Connection File
.cfg	Game	Wesnoth Markup Language File
.cfg	Settings	Configuration File
.cfg	3D Image	Cal3D Model Configuration File
.cfg	Settings	LightWave Configuration File
.cfg	Settings	Celestia Configuration File
.cfg	Settings	MAME Configuration File
.cfge	Game	Jewel Quest Configuration File
.cfl	Misc	IMVU Product File
.cfm	Web	ColdFusion Markup File
.cfml	Web	ColdFusion Markup Language File
.cfr	Game	Cross Fire Replay File
.cfs	Disk Image	Compact File Set Archive
.cfs	Misc	Lucene Compound Index File
.cfs	Data	CFS Console File
.cfxr	Audio	Cocoa Sfxr File
.cg	3D Image	Cg Program
.cg3	3D Image	Cabri 3D Document
.cga	3D Image	Crytek Geometry Animation File
.cgf	Game	Crytek Geometry Format File
.cgfx	3D Image	CgFX Shader File
.cgi	Executable	Common Gateway Interface Script
.cgm	Vector Image	Computer Graphics Metafile
.cgp	Encoded	PixelCryptor Encrypted File
.cgr	CAD	CATIA Graphical Representation File
.cgr	Settings	Quest3D Channel Group File
.cgrp	Audio	Pro Tools Clip Group File
.cgz	System	Linux Drivers Archive
.cgz	Game	Cube Map File
.ch3	Page Layout	Harvard Graphics DOS Chart File
.cha	Settings	Photoshop Channel Mixture
.cha	Web	IRC Chat Configuration File
.cha	Font	Character Layout File
.cham	Developer	Compiled HAM File
.charset	Text	Character Set
.chart	Text	Feedback Chart File
.chat	Web	IRC Chat Configuration File
.chc	Data	HCFR Colorimeter Data File
.chd	Game	MAME Hard Disk Image
.chef	Developer	Chef Source Code File
.chesstitanssave-ms	Game	Microsoft Chess Titans Saved Game
.chg	System	Windows Net Logon File
.chg	Data	Quicken Online Data File
.chk	Misc	Saved File Fragment
.chk	Data	InterCheck Checksum Database
.chk	System	Netgear Router Firmware File
.chk	Game	StarCraft Chunk File
.chl	Settings	WinFast PVR2 Channel List
.chm	Web	Compiled HTML Help File
.chml	Encoded	Chameleon Encrypted Database File
.chn	Data	Ethnograph Data
.chord	Text	Song Chords File
.chr	Font	Borland Character Set File
.chr	3D Image	CryENGINE Character File
.chr	3D Image	3ds Max Characters File
.chr0	Game	Wii Model Animation File
.chrparams	3D Image	CryENGINE Character Parameters File
.chs	System	Windows Chinese Noise-Word List File
.cht	Game	SNES Cheat File
.cht	System	Windows Chinese Traditional Noise-Word List File
.chunk001	Misc	File Splitter Split Archive Part 1
.chv	Data	ChView Interactive Star Map File
.chw	Misc	Compiled Help Index File
.chx	Settings	AutoCAD Standards Check File
.ci	System	Windows Content Indexer Catalog File
.ci	Developer	PolySpace Preprocessed Code File
.cidb	Audio	iTunes CD Information File
.cif	Disk Image	Easy CD Creator Disk Image
.cil	Vector Image	Clip Gallery Packaged File
.cimg	Raster Image	CImg Image File
.cin	Raster Image	Kodak Cineon Bitmap File
.cine	Video	Phantom Digital Video File
.cip	Video	Cavena Subtitles File
.circuit	CAD	KTechlab Circuit Design File
.cit	Raster Image	Intergraph Bitmap Image File
.civ5save	Game	Civilization 5 Saved Gae
.ck9	Backup	Cook'n Cookbook Backup File
.ckb	Audio	Cricket Audio Bank File
.ckbx	Developer	Cricket Audio XML Bank Description File
.ckd	CAD	Kubotek Design Container
.ckf	Audio	Casio Keyboard File
.ckp	Database	SQL Server Checkpoint File
.ckt	Data	CircuitMaker File
.cl	Misc	Cursor Library
.cl2	Data	HY-TEK Meet Results File
.cl2arc	Page Layout	Comic Life 2 Document Archive
.cl2doc	Page Layout	Comic Life 2 Document
.cl2lyt	Page Layout	Comic Life 2 Layout File
.cl2tpl	Page Layout	Comic Life 2 Template
.cl4	Data	Easy CD Creator 4 Project File
.cl5	Disk Image	Easy CD Creator 5 Saved Project
.clarify	Vector Image	Clarify Document
.class	Developer	Java Class File
.classlist	Data	SMART Notebook Class List File
.clb	Data	ICQ Contact List
.clb	System	COM+ Catalog File
.cld	Page Layout	Canon CD Label Template
.cld	Data	ClamAV Virus Definitions File
.cleo	Plugin	CLEO Grand Theft Auto Mod File
.clg	Settings	Windows Catalog File
.clg	Data	Collage Maker Project File
.cli	Game	Grand Theft Auto Clip Data File
.clips	Developer	Coda Clips File
.clix	Data	CLIX Command File
.clk	Data	Corel R.A.V.E Project File
.clk	Video	ClickView Video File
.clkk	Misc	Clicker Keyboard
.clkt	Misc	Clicker Template
.clkw	Misc	Clicker Word Bank
.clkx	Misc	Clicker Grid Set
.clm	Data	GenePattern CEL Descriptor File
.clm	Data	MagicJack Call Log File
.clp	Data	Finale Clip File
.clp	Data	Windows Clipboard File
.clp	Data	CrazyTalk Clip File
.clpi	Video	Blu-ray Clip Information File
.clr	Settings	Vue Color Maps File
.clr	Misc	Flash Color Set
.clr	Settings	CryptLoad Router Information File
.clr0	Game	Wii Color Swapping Animation File
.cls	Developer	Program Class File
.cls	Misc	LaTeX Document Class File
.clt	Game	VisualBoyAdvance Cheat List File
.clt	Page Layout	Clarity Legal Transcript File
.clw	Developer	Visual C++ ClassWizard File
.clx	Encoded	Ceelox SecureMail Secure Message
.clx	Data	Standard Dictionary File
.cm	Game	CLEO Custom Mission
.cm	Settings	Cable Modem Configuration File
.cm10	Data	CaseMap 10 Case File
.cm2	3D Image	Poser Camera Set File
.cma	Developer	OCaml Library
.cma	Database	TM1 Exported Cube File
.cmap	Data	CmapTools Concept Map File
.cmbl	Data	Logger Pro Data File
.cmd	Game	M.U.G.E.N. Character Commands File
.cmd	Executable	Windows Command File
.cme	Game	Crazy Machines Experiment File
.cmf	Backup	Connected Backup File
.cmf	Audio	Creative Music Format
.cmf	3D Image	Cal3D Binary Mesh File
.cml	Data	Chemical Markup Language File
.cml	Game	Crazy Machines Lab File
.cml	Misc	CryptoMailer Encrypted File
.cmm	Misc	Corel Multimedia Manager Album
.cmmp	Video	Camtasia MenuMaker Project
.cmmtheme	Settings	CleanMyMac Theme File
.cmmtpl	Video	Camtasia MenuMaker Template
.cmod	3D Image	Celestia Model
.cmp	Settings	Windows Connection Manager Profile
.cmp	CAD	Solid Edge Wire Harness File
.cmp	CAD	Generic CADD Component File
.cmp	Plugin	HotDocs Clause Component File
.cmproj	Video	Camtasia Project File
.cmrec	Video	Camtasia Recording
.cms	Web	Content Management System
.cms	Data	Connection Manager Service Profile
.cmx	Vector Image	Corel Metafile Exchange Image File
.cmz	3D Image	Compressed Poser Camera Set File
.cn1	Data	CNR Modem Initialization Data File
.cna	Data	Catena Project File
.cnc	CAD	CNC Machine Tool Path
.cnc	CAD	PartMaster CNC File
.cnd	CAD	Melco Condensed Embroidery File
.cndx	Page Layout	Avery DesignPro for Mac Label File
.cnf	Settings	MySQL Configuration File
.cnf	Settings	Telnet Configuration File
.cng	Encoded	CryptoNG Encrypted Archive
.cnm	Text	NoteMap Outline File
.cns	Game	M.U.G.E.N. Character States File
.cnt	System	Help Contents File
.cnv	Vector Image	Canvas 6-8 Drawing File
.cob	Developer	COBOL Source Code File
.cod	Developer	Compiled Source Code
.cod	Text	Atlantis Word Processor Encrypted Document
.codaplugin	Plugin	Coda Plug-in
.codasite	Web	Coda Site File
.cof	Executable	MPLAB COFF File
.coffee	Executable	CoffeeScript JavaScript File
.col	Game	Grand Theft Auto Collision File
.col	Data	Capture One Session File
.collection	Data	Adobe Bridge Collection File
.colorpicker	Plugin	Color Picker Plugin
.colourscheme	Settings	Speedy Browser Colour Scheme File
.colz	Raster Image	Adobe Collage File
.com	Executable	DOS Command File
.comfycakessave-ms	Game	Comfy Cakes Saved Game
.comicdoc	Page Layout	Comic Life Document
.command	Executable	Terminal Command File
.component	Plugin	Mac OS X System Component
.compositefont	Font	Windows Composite Font File
.compressed	Web	WordCompress Compacted Web File
.con	Web	Concept Application Source File
.con	Game	Battlefield 1942 Configuration File
.conf	Settings	Generic Configuration File
.conf	Settings	Unix Configuration File
.config	Developer	Configuration File
.configprofile	System	Apple Configuration Profile
.conform	Audio	Conformalizer Change List File
.contact	Data	Windows Contact File
.contour	Misc	Contour Screenplay File
.controls	Settings	OpenBVE Keyboard Shortcuts File
.copreset	Settings	Capture One Preset File
.copy	Audio	Sony Ericsson Protected Content File
.cor	GIS	Trimble Corrected SSF File
.cor	Vector Image	CorelDRAW Drawing
.cos	Settings	Capture One Settings File
.cos	Game	Creatures CAOS File
.cos2	Misc	Pinnacle Studio Cache File
.costyle	Settings	Capture One Style File
.cov	Page Layout	Fax Cover Page File
.cox	Plugin	Click & Create Extension
.cp	Developer	Captivate Source File
.cp	Developer	Xcode C++ Source File
.cp3	Misc	Grand Prix 3 Cockpit Shape File
.cp9	Compressed	ChoicePoint Encrypted File
.cpa	CAD	CADSTAR PCB Archive File
.cpb	Developer	Comicino Studio Project File
.cpbitmap	Raster Image	iOS Wallpaper Image
.cpc	Raster Image	CPC Compressed Image File
.cpd	Raster Image	Compressed PhotoDefiner Image File
.cpd	Database	RoboHelp Cache Project Database
.cpe	Page Layout	Fax Cover Page File
.cpf	Data	Cognos Project File
.cpf	Settings	Cab Provisioning Format File
.cpg	Game	StarCraft Campaign File
.cpg	Web	Cool Page Project File
.cpg	Raster Image	Manga Studio Page File
.cpg	Settings	ESRI Code Page File
.cpgz	Compressed	Compressed CPIO Archive
.cph	Page Layout	Corel Print House File
.cpi	System	Codepage Information File
.cpi	Video	AVCHD Video Clip Information File
.cpio	Encoded	Unix CPIO Archive
.cpk	Data	DTM Test Log File
.cpk	Game	CRI Middleware Package
.cpl	System	Windows Control Panel Item
.cpmz	Data	Miradi/ConPro Project File
.cpn	Game	Age of Mythology Campaign File
.cpp	Developer	C++ Source Code File
.cpq	System	Compaq OEM Disc Configuration File
.cpr	System	Windows Phone Display Settings File
.cpr	Settings	Adobe Captivate Preferences File
.cpr	Audio	Cubase Project
.cpr	Game	CPC Plus Cartridge
.cps	Raster Image	Corel Photo House File
.cps	Game	The Powder Toy Save File
.cpt	Misc	Pocket Slides Presentation
.cpt	Compressed	Compact Pro Archive
.cpt	Encoded	Ccrypt Encrypted Archive
.cpt	Audio	DTS Compact Audio File
.cpt	Raster Image	Corel Photo-Paint Document
.cptl	Data	Adobe Captivate Project Template File
.cptx	Data	Adobe Captivate Project File
.cpx	Game	Rise of Rome Campaign File
.cpx	Settings	Oracle ADF Binding Context File
.cpx	Raster Image	Corel CMX Compressed File
.cpy	3D Image	3ds Max Copy Track File
.cpy	Page Layout	eCopy Desktop File
.cr2	Camera Raw	Canon Raw Image File
.cr2	3D Image	Poser Character Rigging File
.craft	Game	KSP Spacecraft File
.crash	System	Mac OS X Crash Log File
.crashed	Misc	AbiWord Crash-Saved Document
.crc	Misc	Total Commander Checksum File
.crd	Misc	Windows CardSpace File
.crd	Misc	Guitar Tabs
.crdownload	Misc	Chrome Partially Downloaded File
.crds	Backup	Windows CardSpace Backup File
.crev	Data	Adobe Captivate Commentable SWF File
.crf	3D Image	Cal3D Binary Materials File
.crl	Web	Certificate Revocation List File
.crs	Game	StepMania Course File
.crt	Web	Security Certificate
.crtr	Page Layout	MultiAd Creator Pro Document
.crtx	Data	Office 2007 Chart Template File
.crv	CAD	VCarve Pro Design File
.crw	Camera Raw	Canon Raw CIFF Image File
.crwl	Text	Windows Crawl File
.crx	Plugin	Chrome Extension
.cry	Data	CryENGINE Map File
.crypt	Backup	WhatsApp Backup File
.crypted	Encoded	WinOptimizer Encrypted File
.cryptra	Encoded	Cryptra Encrypted File
.crysisjmsf	Game	Crysis Saved Game
.crysispsf	Game	Crysis Warhead Saved Game
.crz	3D Image	Compressed Poser Character Rigging File
.cs	Game	CLEO Custom Script
.cs	Developer	Visual C# Source Code File
.cs	Data	ColorSchemer Studio Color Scheme
.csa	Data	PNA Code Calset File
.csaplan	Settings	SPSS Analysis Plan File
.csd	Page Layout	Compact Shared Document
.csd	3D Image	Manga Studio Scene File
.csf	3D Image	Cal3D Binary Skeleton File
.csf	Settings	Adobe Color Settings File
.csf	Raster Image	Content Sealed Format
.csh	Misc	Photoshop Custom Shapes File
.csh	Audio	Cubase Waveform File
.csh	Executable	C Shell Script
.cshtml	Web	ASP.NET Razor Web Page
.csi	Developer	EdLog Program Data File
.csi	Developer	ContentServ Include File
.cskin	Settings	CD Art Display Skin File
.csl	Data	CineStyle Color Lookup File
.csm	3D Image	Character Studio Marker File
.csn	Developer	Adobe Code Snippet Document
.cso	Disk Image	Compressed ISO Disk Image
.cso	3D Image	Compiled Shader Object File
.csp	Web	Concept Server Page
.csp	Developer	Caché Server Page
.csplan	Settings	SPSS Sampling Plan File
.csproj	Developer	Visual Studio C# Project
.csr	Web	Certificate Signing Request File
.css	Web	Cascading Style Sheet
.cst	Page Layout	Manga Studio Story File
.cst	Developer	ContentServ Template
.cst	Video	Director External Cast File
.cst	Settings	Canvas Custom Set File
.csutil	Data	ColorSync Utility Folder
.csv	Data	Comma Separated Values File
.csx	Developer	Visual C# Script
.csy	Vector Image	Canvas Symbol File
.ct	Game	Cheat Engine Cheat Table
.ct	Raster Image	Scitex Continuous Tone File
.ctb	Settings	AutoCAD Color-Based Plot Style File
.ctbodyfitting	Settings	CrazyTalk Animator Actor Fitting File
.ctc	Developer	Visual Studio Command Table Configuration File
.ctf	Misc	Content Transformation File
.ctf	Misc	AVG Update Control File
.ctf	Data	WhereIsIt Catalog File
.ctg	Misc	Canon Digital Camera Catalog File
.ctl	Data	StepMania SMZIP Package Description File
.ctl	Developer	Visual Basic UserControl Object File
.ctm	Game	Star Wars Republic Commando Map File
.ctm	Data	CrazyTalk Model File
.cto	Developer	Visual Studio Binary Command Table Output File
.ctp	Data	CrazyTalk Project File
.ctp	Developer	CakePHP Template
.ctproject	Data	CrazyTalk Animator Project File
.cts	Audio	CrazyTalk Script File
.ctsym	Developer	Visual Studio Command Table Output File
.ctt	Data	Messenger Contact List
.ctv	Data	Citavi Project
.ctv3	Data	Citavi 3 Project File
.ctx	Developer	Visual Basic Control Binary File
.ctx	Game	Valve ICE Encoded Script
.ctxt	Developer	BlueJ Context File
.cty	Game	SimCity City File
.cu	Developer	CUDA Source Code File
.cub	Data	Analysis Services Cube File
.cub	GIS	ISIS Cube File
.cue	Disk Image	Cue Sheet File
.cue	Disk Image	CDRWIN Cue Sheet
.cui	Settings	Autodesk Custom Workspace File
.cuix	Settings	AutoCAD Custom User Interface File
.cul	Misc	Windows Cursor Library
.cur	System	Windows Cursor
.cursorfx	Data	CursorFX Theme File
.curxptheme	Data	CursorXP Theme File
.cus	Settings	AutoCAD Custom Dictionary File
.cut	Raster Image	Dr. Halo Bitmap Image File
.cv5	Vector Image	Canvas 5 Drawing File
.cva	Data	Canvas Sequence Set
.cva	Settings	HP Systems Software Manager Information File
.cvc	Video	cVideo
.cvd	Data	Bitdefender Virus Definition File
.cvd	Data	ClamAV Virus Definitions File
.cvf	Misc	CPU-Z Validation File
.cvg	Vector Image	Calamus Vector Graphic File
.cvi	GIS	CassiniVision Map Image File
.cvi	Vector Image	Canvas Image File
.cvn	Data	CineVision Encoding Session
.cvr	Misc	Microsoft Crash Report File
.cvs	Vector Image	Canvas 3 Drawing File
.cvsrc	Developer	CVS Command File
.cvt	Plugin	Canvas External Tool File
.cvw	Page Layout	CaseView Document
.cvx	Vector Image	Canvas Drawing File
.cw	Page Layout	CardWorks Template
.cwb	Audio	Cakewalk Bundle
.cwf	Settings	CorelDRAW Workspace File
.cwk	Data	ClarisWorks Document
.cwp	Audio	Cakewalk SONAR Project
.cws	Text	Claris Works Template
.cwt	Vector Image	ClarisWorks Texture File
.cww	Data	Crossword Weaver Puzzle File
.cwz	Data	Circuit Wizard File
.cx3	Video	CMS Recorded Video File
.cxarchive	Compressed	CrossOver Bottle Archive
.cxd	Data	SimplePCI Data Document
.cxf	Data	Chemical Exchange Format File
.cxf	Data	Cuttlefish Extended Format File
.cxf	Vector Image	Coordinates Export Format
.cxf	Misc	Picasa Collage File
.cxp	Developer	CX-Programmer Project File
.cxt	Data	Director Protected Cast File
.cxt	Developer	CX-Programmer Project Text File
.cxx	Developer	C++ Source Code File
.cyberducklicense	Settings	Cyberduck Donation Key
.cyberduckprofile	Settings	Cyberduck Connection Profile
.cyi	Text	Clustify Input File
.cyo	Data	Clustify Output File
.cyp	CAD	Home Designer Pro Project File
.cys	Data	Cytoscape Session File
.cys	Data	Clustify Summary File
.cyw	Executable	Rbot.CYW Worm File
.czd	CAD	CAD Zone Drawing
.czi	Data	Carl Zeiss Image Data File
.czip	Compressed	ZipGenius CryptoZip File
.czp	Data	ClozePro Archive