List of file extensions begins with C

You can choose one of the following extensions which begin with the letter 'C':

Extension	Popularity
.c	Very High
.c++	Low
.c13	Low
.c2d	High
.c2r	Very High
.c2u	Low
.c4b	Low
.c4d	Low
.c4f	Low
.c4g	Low
.c4i	Low
.c4k	Low
.c4l	Low
.c4m	Low
.c4p	Low
.c4s	Low
.c4u	Low
.c4v	Low
.c64	Low
.cab	Very High
.cache	Low
.cache-3	Low
.cachedump	Low
.caf	Very High
.cakemaniasavedgame	Low
.cakewalkstudioware	Low
.cakewalkwindowlayout	Low
.cal	Low
.caliperskin	Low
.cals	Low
.calx	Low
.cam	High
.caml	Low
.camp	Very High
.camproj	Low
.camrec	Low
.camthtr	Low
.camv	Low
.cannonblastsavedgame	Low
.cap	High
.caps	Low
.car	Low
.cas	Low
.cat	Very High
.catalog	Low
.catwashsavedgame	Low
.cb7	Low
.cbf	Low
.cbl	Low
.cbo	Low
.cbp	Low
.cbr	Medium
.cbt	Low
.cbx	Low
.cbz	Medium
.cc	Very High
.cca	Low
.ccc	Low
.ccd	Very High
.ccf	Medium
.ccgame	Low
.cch	Low
.ccip	Low
.ccu	Low
.ccx	Low
.cc~	Low
.cd	Very High
.cda	Very High
.cdb	Low
.cdc	Very High
.cdda	Very High
.cdf	High
.cdg	Low
.cdi	Very High
.cdk	Low
.cdl	Low
.cdmp	Very High
.cdr	Medium
.cdrom	Low
.cds	Low
.cdt	Low
.cdw	Low
.cdwlxml	Low
.cdx	Very High
.cdxml	Low
.cedf	Low
.cedprj	Low
.cel	High
.celtx	Low
.celx	Low
.cem	Low
.cept	Low
.cer	Very High
.cetrainer	Low
.cex	Low
.cezeokey	Low
.cf	Low
.cf1	Low
.cf7	Low
.cfa	Low
.cfc	Medium
.cff	Low
.cfg	Very High
.cfm	High
.cfml	Low
.cfn	Low
.cfosspeed	Low
.cfp	Low
.cfs	Low
.cft	Low
.cfxxe	Low
.cg	Low
.cgb	Low
.cgf	Low
.cgi	Low
.cgm	Low
.ch	Low
.ch4	Low
.ch6	Low
.ch8	Low
.cha	Very High
.chameleongemssavedgame	Low
.changedb	Low
.chapters	Low
.chat	Low
.chd	Low
.chesstitanssave-ms	Very High
.chf	Low
.chk	Very High
.chm	Very High
.chmprj	Low
.chm_aq	Low
.chpscrap	Low
.chr	Low
.chs	Low
.cht	Low
.chuzzledeluxesavedgame	Medium
.chw	Low
.chx	Low
.chy	Low
.ci	Low
.cida	Low
.cif	Medium
.cil	Medium
.cin	Very High
.cit	Low
.civ4replay	Low
.civ4savedgame	Low
.civ4worldbuildersave	Low
.civ5map	Low
.civ5proj	Low
.civ5sln	Low
.civbeyondswordreplay	Low
.civbeyondswordsave	Low
.civbeyondswordwbsave	Low
.civwarlordsreplay	Low
.civwarlordssave	Low
.civwarlordswbsave	Low
.ckz	Low
.cl5	Low
.class	Low
.classdiagram	Low
.cld	Low
.cli	Low
.clk	Low
.clm	Low
.clo	Low
.cloe	Low
.clonecd	Low
.clonedvd	Low
.clonedvdmobile	Low
.clp	Very High
.clr	Medium
.cls	High
.clsj	Low
.clt	Low
.clx	Medium
.cm10rcmlayoutevent	Low
.cm10rcmlayoutevent.1	Low
.cm10rcmresourceloader	Low
.cm12rcmlayoutevent	Low
.cm12rcmlayoutevent.1	Low
.cm12rcmresourceloader	Low
.cm2	Low
.cm3	Low
.cmap	Low
.cmb	Low
.cmc	Low
.cmcsend	Low
.cmd	Very High
.cmd_aq	Low
.cme	Low
.cml	Low
.cmmp	Low
.cmmtpl	Low
.cmp	Low
.cmr	Low
.cms	Low
.cmt	Low
.cmx	Medium
.cmz	Low
.cnf	Very High
.cnk	Low
.cns	Low
.cnt	Low
.cnv	Low
.co	Low
.cob	Low
.cod	Very High
.cof	Low
.coffeerushsavedgame	Low
.coffeetycoonsavedgame	Low
.col	High
.collapsesavedgame	Low
.collection	Very High
.com	Very High
.com%252fa%253ff%253d2142030097%2526pn%253dcomcast%2526p%253dc	Low
.com%252fa%253ff%253d2142030098%2526pn%253dcomcast%2526p%253dc	Low
.com%2f%3fp%3dnews	Low
.com&adsafe=adultsonly&num_radlinks=15&dt=1299879193548&u_tz=6	Low
.com,s=98980_2,s	Low
.com,s=99301_2,s	Low
.com-googlemail#database	Low
.comfycakessave-ms	Very High
.comicdoc	Low
.comicstl	Low
.comictpl	Low
.command	Low
.commandline	Low
.componentdiagram	Low
.compositefont	Very High
.com_0	Low
.com_aq	Low
.com_bookmarks	Low
.com}-_jailbait_pics	Low
.conf	High
.config	Very High
.configsettings	Low
.consis	Low
.contact	Very High
.contacts	Low
.content	Low
.contentsonclipboard	Low
.controlpanel	Low
.cookiedb	Low
.cool	Low
.cord	Low
.corelproject	Low
.corelshow	Low
.corelshowproject	Low
.cov	Medium
.coverage	High
.coveragexml	Medium
.cp	Low
.cpbitmap	Low
.cpc	Low
.cpe	Medium
.cpf	Low
.cpio	Very High
.cpj	Low
.cpl	Very High
.cpl_aq	Low
.cpm	Low
.cpp	Very High
.cpr	Low
.cprr	Low
.cpt	Low
.cptl	Low
.cpy	Low
.cqe	Low
.cqf	Low
.cr2	Very High
.crash	Low
.crc	Low
.crd	Very High
.crds	Very High
.crec	Low
.crf	Low
.crl	Very High
.crpd	Low
.crt	Very High
.crtx	Very High
.crt_aq	Low
.crw	Very High
.crwl	Low
.crx	Medium
.crysisjmsf	Low
.crz	Low
.cs	Very High
.cs1	Medium
.csa	Low
.csaplan	Low
.csb	Low
.csc	Low
.cscnp	Low
.cscont	Low
.cscpflt	Low
.cscpkt	Low
.cscpro	Low
.csdproj	High
.csf	Very High
.csh	Very High
.cshtml	Low
.csi	Low
.csk	Low
.csl	Low
.csm	Low
.cso	Low
.csp	Low
.cspl	Low
.csplan	Low
.csproj	Very High
.csr	Low
.css	Very High
.csv	Very High
.csvenx	Low
.csz	Low
.ct	Low
.ct4im	Low
.cta	Low
.ctb	Low
.ctd	Low
.ctde	Low
.ctf	Low
.ctg	Low
.ctl	Medium
.ctm	Low
.ctoa	Low
.ctp	Medium
.cts	Low
.ctt	Very High
.ctw	Low
.ctx	Medium
.cube	Low
.cue	Very High
.cui	Low
.cuix	Low
.cul	Low
.culist	Low
.cup	Low
.cur	Very High
.cursor	Low
.cursorfx	Low
.curxptheme	Low
.cus	Low
.cust	Low
.cut	High
.cv	Low
.cv2	Low
.cvr	Low
.cvs	Low
.cvx	Low
.cwe	Low
.cww	Low
.cxml	Low
.cxx	Very High
.cyberducklicense	Low
.cyberduckprofile	Low

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