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Types of Assemblies
cos.DLL Dynamic Link Library
cos.EXE Windows Executable File
Types of Audio Files
cos.A52 Dolby Digital AC-3 Compressed Audio File
cos.AAC Advanced Audio Coding Compressed Audio File
cos.AC3 Dolby Digital AC-3 Compressed Audio File
cos.AIF Audio Interchange Format File
cos.APE Monkey's Audio Compressed Audio File
cos.AU Sun / NeXT Audio File
cos.DTS Digital Theater Systems Audio File
cos.FLAC Free Lossless Audio Codec Compressed Audio FIle
cos.M4A MPEG-4 Audio File
cos.M4P Protected AAC File
cos.MID MIDI Audio Sequence
cos.MKA Matroska Audio Stream
cos.MOD MOD Audio File
cos.MP1 MPEG-1 Audio Layer I
cos.MP2 MPEG-1 Audio Layer II
cos.MP3 MPEG-1 Audio Layer 3
cos.OGG Ogg Multimedia Container File
cos.OMA OpenMG Audio File
cos.RA RealMedia Audio File
cos.RAM RealMedia Audio File
cos.SND Sun / NeXT Audio File
cos.SPX Ogg Speex Audio File
cos.WAV Waveform Audio
cos.WMA Windows Media Audio File
cos.WV WavPack Compressed Audio File
cos.XM Extended Module Audio File
Compressed Files Compressed files or archives contain one or more files or folders that have been compressed to take up less space on disk. Compression is especially useful when transferring files over the internet as it saves bandwidth and reduces the time required to download files. The most common compressed file extensions are .ZIP (Zip Compressed Archive) and .RAR (WinRAR Compressed Archive). Types of Compressed Files
cos.7Z 7-Zip Compressed Archive
cos.ACE Ace Compressed Archive
cos.ARJ Archived by Robert Jung Compressed Archive
cos.BZ BZip Compressed Archive
cos.BZ2 BZip2 Compressed Archive
cos.CAB Cabinet Compressed Archive
cos.CPIO CPIO Compressed Archive
cos.GZ GNU Zip Compressed Archive
cos.JAR Java Archive
cos.LHA LHA Compressed Archive
cos.LZH Lempel-Ziv and Haruyasu Compressed Archive
cos.R00 WinRAR Archive Partial File
cos.RAR WinRAR Compressed Archive
cos.REV WinRAR Recovery Volume
cos.TAR TAR Archive
cos.TAZ TAR Compressed Archive
cos.TBZ BZip Compressed Tar Archive
cos.TBZ2 BZip2 Compressed Tar Archive
cos.TGZ GZip Compressed Tar Archive
cos.UU Uuencoded File
cos.UUE Uuencoded File
cos.XXE Compressed ASCII Archive
cos.Z Unix Compressed Archive
cos.ZIP Zip Compressed Archive
Types of Data Files
cos.CSV Comma Separated Value Database
cos.DAT Data File
cos.DBF dBASE Database
cos.ICL Icon Library
cos.MNL MathML Data
cos.NWP Magentic Content File
cos.ODB ODF Database
cos.ODF ODF Formula
cos.PART Partially Downloaded File
cos.SMF StarMath Data
cos.SXM OpenOffice.org 1.0 Formula
cos.TMP Temporary File
cos.TXT Comma Separated Value Database
cos.XLS Comma Separated Value Database
Disk Images Disk Images contain all of the data from a disk. A disk can be a CD, DVD, thumb drive, hard drive, memory card, or any other type of media. Common types of disk images are .ISO CD images and .BIN disk images. Types of Disk Images
cos.B5I B5I Disk Image
cos.B5T B5T Disk Image
cos.BIN Binary Disk Image
cos.BWI BlinkWrite Disk Image
cos.BWT BlinkWrite Disk Image
cos.C2D C2D Disk Image
cos.CCD CCD Disk Image
cos.CD CD Disk Image
cos.CDI CD Image File
cos.CDR Raw CD Audio File
cos.CIF CIF Disk Image
cos.DAO DAO Disk Image
cos.DI Raw CD Audio File
cos.DMG Mac OS X Disk Image
cos.DVD DVD Disk Image
cos.FCD FCD Disk Image
cos.FLP FLP Disk Image
cos.GCD GCD Disk Image
cos.GCM GameCube Image File
cos.GI Global Disk Image
cos.IBB IBB Disk Image
cos.IBP IBP Disk Image
cos.IBQ IsoBuster Disk Image
cos.IMG Disk Image File
cos.ISO ISO 9660 Disk Image
cos.LST DVD Image List
cos.MDF MDF Disk Image
cos.MDS MDS CD/DVD Image
cos.NRG Nero Disk Image
cos.P01 P01 Disk Image
cos.PDI InstantCopy Disc Image
cos.PXI PXI Disk Image
cos.TAO TAO Disk Image
cos.UDI Universal Disk Image
cos.VC4 VC4 Disk Image
cos.VCD Farstone Virtual Drive
cos.VDI Virtuo CD Manager Disk Image
Types of Documents
cos.ABW AbiWord Document
cos.CHM Compiled Help File
cos.DJV DjVu Document
cos.DJVU DjVu Document
cos.DOC Corel WordPerfect Document
cos.DOC Microsoft Word Document
cos.DOCM Microsoft Word XML Document
cos.DOCX Microsoft Open XML Word Document
cos.GAN GanttProject File
cos.HWP Hangul Word Processor Document
cos.LOG Log File
cos.ODM ODF Master Document
cos.ODT ODF Text Document
cos.OTH
cos.PDB Palm AportisDoc Document
cos.PDF Portable Document Format Document
cos.PSW Pocket Word Document
cos.RTF Rich Text Format Document
cos.SDW StarWriter Document
cos.SGL StarWriter Master Document
cos.STW OpenOffice.org 1.0/value/cos Template
cos.SXG OpenOffice.org 1.0 Master Document
cos.SXW OpenOffice.org 1.0 Text Document
cos.TXT Text Document
cos.UOF Unified Office Format Document
cos.UOT Unified Office Format Document
cos.WPD WordPerfect Document
cos.WPS Microsoft Works Document
cos.XML DocBook Document
Types of Images
cos.!S ZX Spectrum Hobetta Image
cos.$C ZX Spectrum Hobetta Image
cos.$S ZX Spectrum Hobetta Image
cos.001 Ricoh Fax Image
cos.001 SmartFax Image
cos.16 LSS16 Image
cos.2BP Pocket PC Bitmap Image
cos.2D Amapi Image
cos.301 Brooktrout 301 Image
cos.3FR Hasselblad 3F RAW Image
cos.411 Mavica Image
cos.4BIT GoDot Image
cos.4BT GoDot Image
cos.73I TI Bitmap Image
cos.82I TI Bitmap Image
cos.83I TI Bitmap Image
cos.85I TI Bitmap Image
cos.86I TI Bitmap Image
cos.89I TI Bitmap Image
cos.92I TI Bitmap Image
cos.A64 Artist 64 Image
cos.ABS Optocat Image
cos.ACE Aces200 Image
cos.ACR Dicom Image
cos.AFX Auto F/X Image
cos.ALIAS Alias Image File
cos.ALS Alias Image File
cos.AMI Amica Paint Image
cos.ANI Animated Mouse Cursor Image
cos.ANI Windows Animated Cursor
cos.ANV AirNav Image
cos.APX Photopaint Image
cos.ARF ARF Image
cos.ARN Astronomical Research Network Image
cos.ART Art Director Image
cos.ART Artisan Image
cos.ART Advanced Art Studio Image
cos.ART Pfs Art Publisher Image
cos.ATK Andrew Toolkit raster object Image
cos.ATT AT&T Group 4 Image
cos.AVS Stardent AVS X Image
cos.B&W ImageLab Image
cos.B16 PCO Image
cos.B3D B3D (images) Image
cos.BFL BFLI Image
cos.BFLI BFLI Image
cos.BFX Bfx Bitware Image
cos.BGA OS/2 Bitmap Image
cos.BIE JBIG Image
cos.BIF byLight Image
cos.BIG Cartes Michelin Image
cos.BLD MegaPaint Image
cos.BLK Amiga IFF Image
cos.BM X11 Bitmap Image
cos.BMC Embroidery Image
cos.BMF BMF Image
cos.BMP Windows Bitmap Image
cos.BMP Alpha Microsystems BMP Image
cos.BMS Playback Bitmap Sequence Image
cos.BOB Bob Raytracer Image
cos.BPX Truevision Targa Image
cos.BRK Brooktrout 301 Image
cos.BRT Brooktrout 301 Image
cos.BS Printfox/Pagefox Image
cos.BTN JustButtons animated bitmap Image
cos.BUM Poser Bump Image
cos.BW Silicon Graphics RGB Image
cos.B_W ImageLab Image
cos.C4 Edmics Image
cos.CAL CALS Raster Image
cos.CALS CALS Raster Image
cos.CAM Casio QV-10/100 Camera Image
cos.CAN Canon Navigator Fax Image
cos.CAR NeoBook Cartoon Image
cos.CAT Photomatrix Image
cos.CBM Fuzzy bitmap Image
cos.CDR Corel Draw Bitmap (preview) Image
cos.CDU CDU Paint Image
cos.CE Computer Eyes, Digital Vision Image
cos.CE1 ComputerEyes Raw Image
cos.CE2 ComputerEyes Raw Image
cos.CEL Kiss Cel Image
cos.CFT Optigraphics Image
cos.CIN Kodak Cineon Image
cos.CIT Intergraph Format Image
cos.CLO Cloe Ray-Tracer Image
cos.CLOE Cloe Ray-Tracer Image
cos.CLP Windows Clipboard Image
cos.CLP PC Paint / Pictor Page Image
cos.CLP GoDot Image
cos.CMP Discorp CMP Image
cos.CMT Chinon ES-1000 digital camera Image
cos.CMU CMU Window Manager Image
cos.CMX Corel Metafile Exchange (preview) Image
cos.CP8 CP8 256 Gray Scale Image
cos.CPI Calamus Image
cos.CPT CorelDraw Photopaint Image
cos.CR2 Raw Image File
cos.CRG Calamus Image
cos.CRW Raw Image File
cos.CT Iris CT Image
cos.CUR Mouse Cursor Image
cos.CURSOR Sun Icon/Cursor
cos.CUT Dr Halo Image
cos.CVP Portrait Image
cos.DAT SPOT Image
cos.DCM Dicom Image
cos.DCR Raw Image File
cos.DCX Multipage PCX Image
cos.DCX Zsoft Multi-page Paintbrush Image
cos.DCX Zsoft Publisher's Paintbrush Image
cos.DD Doodle C64 Image
cos.DDS Microsoft DirectDraw Surface
cos.DIA Dia UML Diagram
cos.DIB Windows Bitmap Image
cos.DIS DKB Ray-Tracer Image
cos.DNG Raw Image File
cos.DOO Doodle Atari Image
cos.DPX DPX Image
cos.DRZ Draz Paint Image
cos.DWF AutoCAD Drawing
cos.DWG AutoCAD Drawing
cos.DXF AutoCAD Drawing eXchange Format Drawing
cos.DXF AutoCAD Drawing
cos.ECC Ecchi Image
cos.EI Electric Image
cos.EIDI Electric Image
cos.EIF Eroiica Image
cos.EMF Enhanced Metafile Format Image
cos.EPA Award Bios Logo
cos.EPS Encapsulated PostScript Image
cos.ESM Enhance Simplex Image
cos.FAC Usenix FaceServer Image
cos.FACE Usenix FaceServer Image
cos.FAX Fax Group 3 Image
cos.FBM Fuzzy bitmap Image
cos.FFF Maggi Hairstyles & Cosmetics Image
cos.FI Flash Image
cos.FIG XFig Drawing
cos.FIT FIT Image
cos.FITS Flexible Image Transport System Image
cos.FLC Autodesk Animator Image
cos.FLI Autodesk Animator Image
cos.FPG DIV Game Studio Multi Map Image
cos.FRE Male Normal CT Image
cos.FRM Megalux Frame
cos.FRM PhotoFrame
cos.FSH EA Sports FSH Image
cos.FSY PhotoFantasy Image
cos.FTS Flexible Image Transport System Image
cos.FXO WinFAX Image
cos.FXS WinFAX Image
cos.G3 Fax Group 3 Image
cos.G3N Imaging Fax Image
cos.G4 Access Image
cos.GAF Total Annihilation Image
cos.GB Printfox/Pagefox Image
cos.GBR Gimp Brush Image
cos.GEM Digital Research (GEM Paint) Image
cos.GEO GeoPaint Image
cos.GG Koala Paint (Compressed) Image
cos.GIF Graphics Interchange Format Image
cos.GIFF CompuServe GIF Image
cos.GM Autologic Image
cos.GM2 Autologic Image
cos.GM4 Autologic Image
cos.GRB HP-48/49 GROB Image
cos.GREY Raw Image
cos.GRO HP-48/49 GROB Image
cos.GRY Raw Image
cos.HDR Apollo HDRU Image
cos.HDR ArcInfo Binary Image
cos.HDRU Apollo HDRU Image
cos.HED Hi-Eddi Image
cos.HF HF Image
cos.HIR Hires C64 Image
cos.HPGL HP Graphics Language Image
cos.HPI Hemera Photo Image
cos.HR TRS 80 Image
cos.HRU HRU Image
cos.HRZ Slow Scan Television Image
cos.HTA Hemera Thumbs Image
cos.I17 Pixel Power Collage Image
cos.I18 Pixel Power Collage Image
cos.IB7 Pixel Power Collage Image
cos.ICA IOCA Image
cos.ICB Image Capture Board Image
cos.ICN RIPTerm Image
cos.ICNS Macintosh Icon File
cos.ICO Windows Icon File
cos.ICO Sun Icon/Cursor
cos.ICON Sun Icon/Cursor
cos.IDC Core IDC Image
cos.IF9 Pixel Power Collage Image
cos.IFF Explore (TDI) & Maya Image
cos.IFF Sun TAAC Image
cos.IFF Amiga IFF Image
cos.IIM Inshape Image
cos.IIMG Interleaf Image
cos.ILBM Deluxe Paint, Electronic Arts Image
cos.IM AIM Grey Scale Image
cos.IM5 IM5 (Visilog) Image
cos.IMA AIM Grey Scale Image
cos.IMG ADEX Image
cos.IMG Digital Research (GEM Paint) Image
cos.IMG Imaging Technology Image
cos.IMG Img Software Set Image
cos.IMG Microtek Eyestar Image
cos.IMG Planetary Data System Image
cos.IMG Radiance Image
cos.IMG Sharp GPB Image
cos.IMG Starbase Image
cos.IMG Vivid Ray-Tracer Image
cos.IMG Autocad CAD-Camera Image
cos.IMG Datacopy Image
cos.IMG Vicar Image
cos.IMT IMNET Image
cos.INFO Amiga icon
cos.IOCA IOCA Image
cos.IPG Mindjongg Format Image
cos.IPH InterPaint (Hires) Image
cos.IPT InterPaint (Multicolor) Image
cos.IRIS Iris graphic Image
cos.IRIS Silicon Graphics RGB Image
cos.ISH Image Speeder Image
cos.ISM Image System (Multicolor) Image
cos.ISS ISS Image
cos.ITG Intergraph Format Image
cos.IVB Truevision Targa Image
cos.J JPEG / JFIF Image
cos.J2K LuraWave JPEG-2000 Format Image
cos.J6I Ricoh Digital Camera Image
cos.JBF PaintShopPro Browser Cache File
cos.JBG JBIG Image
cos.JBIG JBIG Image
cos.JFIF Joint Photographic Experts Group Image
cos.JIF Joint Photographic Experts Group Image
cos.JIF Jeff's Image Format Image
cos.JJ Doodle C64 (Compressed) Image
cos.JLS JPEG-LS Image
cos.JNG Jpeg Network Graphics Image
cos.JP2 LuraWave JPEG-2000 Format Image
cos.JPC LuraWave JPEG-2000 Code Stream Image
cos.JPE Joint Photographic Experts Group Image
cos.JPEG Joint Photographic Experts Group Image
cos.JPG Joint Photographic Experts Group Image
cos.JPS Stereo Image
cos.JPX LuraWave JPEG-2000 Format Image
cos.JTF Hayes JTFax Image
cos.K25 Kodak DC25 Camera Image
cos.KDC Raw Image File
cos.KFX Kofax Group 4 Image
cos.KOA Koala Paint Image
cos.KPS IBM Kips Image
cos.KQP Konica Camera File
cos.LBM Deluxe Paint, Electronic Arts Image
cos.LDA LaserData Image
cos.LFF LucasFilm Format Image
cos.LIF Homeworld Texture
cos.LVP LView Pro Image
cos.LWI Light Work Image
cos.M8 Heretic II MipMap Image
cos.MAC Mac Paint Image
cos.MACP Mac Paint Image
cos.MAG MAGIchan Graphics Image
cos.MAP DIV Game Studio Map Image
cos.MAP Fenix Map Image
cos.MBFAVS Stardent AVS X Image
cos.MBFS Stardent AVS X Image
cos.MBM Psion Serie 5 Bitmap Image
cos.MDI Microsoft Document Imaging Image
cos.MDL Half-Life Model Image
cos.MGR MGR bitmap Image
cos.MIF Image Magick file
cos.MIFF Image Magick file
cos.MIL Micro Illustrator Uncompressed Image
cos.MNG Multiple Network Graphics Image
cos.MPNT Mac Paint Image
cos.MRF Marks Russel File
cos.MRW Minolta Raw Image File
cos.MSK PaintShopPro Mask
cos.MSP Microsoft Paint Image
cos.MTV MTV Ray-Tracer Image
cos.MTX Maw-Ware Textures Image
cos.NCD CoverDesigner Image
cos.NCR NCR Image
cos.NCT CoverDesigner Template
cos.NEF Raw Image File
cos.NEO Neochrome (ST & TT) Image
cos.NGG Nokia Group Graphics Image
cos.NITF National Imagery Transmission Image
cos.NLM Nokia Logo File
cos.NOL Nokia Operator Logo
cos.NPM Neopaint Mask
cos.OAZ OAZ Fax Image
cos.OCP Advanced Art Studio Image
cos.OFX Olicom Fax Image
cos.OIL Open Image Library Format Image
cos.ORF Raw Image File
cos.OTB Nokia OTA Image
cos.P64 Picasso 64 Image
cos.P7 XV Visual Schnauzer Image
cos.PAC Stad Image
cos.PAINT Mac Paint Image
cos.PAN SmoothMove Pan Viewer Image
cos.PAT Gimp Pattern
cos.PAT Corel Draw Pattern (preview) Image
cos.PBM Portable Bitmap Image
cos.PBM Portable Bitmap Image
cos.PBT Micro Dynamics MARS Image
cos.PC1 Degas & Degas Elite Image
cos.PC2 Degas & Degas Elite Image
cos.PC3 Degas & Degas Elite Image
cos.PCC Zsoft Publisher's Paintbrush Image
cos.PCD Kodak Photo CD Image
cos.PCL Page Control Language Image
cos.PCT Mac Pict Image
cos.PCT NIST ihdr Image
cos.PCX Zsoft Paintbrush Image
cos.PD Male MRI Image
cos.PDB MonkeyCard Image
cos.PDB MonkeyLogo
cos.PDB Palm Pilot Image
cos.PDB Photo Deluxe Image
cos.PDB TealPaint Image
cos.PDD Photo Deluxe Image
cos.PDN Paint.NET Image
cos.PDS Planetary Data System Image
cos.PDX Mayura Draw Image
cos.PE4 Ulead Texture
cos.PEF Raw Image File
cos.PFR PaintShopPro Frame
cos.PG Printfox/Pagefox Image
cos.PGC Portfolio Graphics Compressed Image
cos.PGF Portfolio Graphics Image
cos.PGM Portable Graymap Image
cos.PHP Adobe PhotoParade Image
cos.PI Blazing Paddles Image
cos.PI1 Degas & Degas Elite Image
cos.PI2 Degas & Degas Elite Image
cos.PI3 Degas & Degas Elite Image
cos.PI4 Degas & Degas Elite Image
cos.PI5 Degas & Degas Elite Image
cos.PI6 Degas & Degas Elite Image
cos.PIC Macintosh Quickdraw/Pict Image
cos.PIC PC Paint / Pictor Page Image
cos.PIC Pixar Image
cos.PIC Radiance Image
cos.PIC Rayshade Image
cos.PIC Advanced Art Studio Image
cos.PIC Bio-Rad confocal Image
cos.PIC Psion Serie 3 Bitmap Image
cos.PIC Softimage
cos.PIC Stad Image
cos.PIC WinMIPS Image
cos.PICIO Pixar Image
cos.PICT Macintosh Quickdraw/Pict Image
cos.PICT2 Macintosh Quickdraw/Pict Image
cos.PIG Ricoh IS30 Image
cos.PIX Alias Image File
cos.PIX Truevision Targa Image
cos.PIX Vort Image
cos.PIX ESM Software Pix Image
cos.PIX PABX Image
cos.PIXAR Pixar Image
cos.PLT HP Graphics Language Image
cos.PM X11 Pixmap Image
cos.PM PM Image
cos.PMG Paint Magic Image
cos.PMP Sony DSC-F1 Cyber-shot Image
cos.PNG Portable Network Graphic Image
cos.PNM Portable Image
cos.PNT Mac Paint Image
cos.PNTG Mac Paint Image
cos.PP4 Micrografx Picture Publisher 4.0 Image
cos.PP5 Micrografx Picture Publisher 5.0 Image
cos.PPM Portable Pixelmap Image
cos.PPP Punk Productions Picture
cos.PR Sun Icon/Cursor
cos.PRC Picture Gear Pocket Image
cos.PRF Polychrome Recursive Format Image
cos.PRI Prisms Image
cos.PSD Adobe Photoshop Image
cos.PSE IBM Printer Page Segment Image
cos.PSF PhotoStudio File
cos.PSP PaintShopPro Image
cos.PST Ulead Pattern
cos.PWP Seattle Film Works multi-image
cos.PXA Pixia Image
cos.PXA Pegs Image
cos.PXB Pixibox Image
cos.PXR Pixar Image
cos.PXS Pegs Image
cos.PZL Puzzle Image
cos.PZP MGI Photosuite Project Image
cos.Q0 Q0 Image
cos.QDV Qdv (Random Dot Software) Image
cos.QRT Qrt Ray-Tracer Image
cos.QTI QuickTime Image Format Image
cos.QTIF QuickTime Image Format Image
cos.QTL YUV 16Bits Image
cos.QTL YUV 4:4:4 Image
cos.QTL YUV 4:1:1 Image
cos.QTL YUV 4:2:2 Image
cos.RAD Radiance Image
cos.RAF Raw Image File
cos.RAS Sun Raster Image
cos.RAST Sun Rasterfile
cos.RAW Raw Image File
cos.RGB Q0 Image
cos.RGB Silicon Graphics RGB Image
cos.RGBA Silicon Graphics RGB Image
cos.RGH ZZ Rough Image
cos.RIX ColoRIX Image
cos.RL4 Windows Bitmap Image
cos.RL8 Windows Bitmap Image
cos.RLA Wavefront Raster Image
cos.RLB Wavefront Raster Image
cos.RLC Image Systems RLC2 Graphic Image
cos.RLE ADEX Image
cos.RLE Intergraph Format Image
cos.RLE Utah raster Image
cos.RLE Windows Bitmap Image
cos.RP Rainbow Painter Image
cos.RPBM Portable Bitmap Image
cos.RPGM Portable Greyscale Image
cos.RPM RunPaint (Multicolor) Image
cos.RPNM Portable Image
cos.RPPM Portable Image
cos.RS Sun Rasterfile
cos.RSB Red Storm Image
cos.SAR Saracen Paint Image
cos.SC2 Msx 2 Screen Image
cos.SCI SciFax Image
cos.SCI ColoRIX Image
cos.SCR Sun Rasterfile
cos.SCR ZX Spectrum Standard Screen Image
cos.SCT SciTex Continuous Tone Image
cos.SCX ColoRIX Image
cos.SD0 Dali Raw Image
cos.SD1 Dali Raw Image
cos.SD2 Dali Raw Image
cos.SDG Star Office Gallery Image
cos.SDT SmartDraw 6 Template
cos.SEQ Stad Image
cos.SFW Seattle Film Works Image
cos.SGF StarWriter Graphics Format Image
cos.SGI Silicon Graphics RGB Image
cos.SGV StarDraw Image
cos.SI Softimage
cos.SIM Aurora Image
cos.SIR BYU SIR Image
cos.SIR Solitaire Image Recorder Image
cos.SJ1 Sega SJ-1 DIGIO Image
cos.SKF Autodesk SKETCH thumbnail Image
cos.SKN Skantek Image
cos.SKP Autodesk SketchUp component Image
cos.SMP Xionics SMP Image
cos.SNA ZX Spectrum Snapshot Image
cos.SPC Spectrum 512 (Compressed) Image
cos.SPS Spectrum 512 (Smooshed) Image
cos.SPU Spectrum 512 Image
cos.SR Sun Rasterfile
cos.SR2 Sony Raw Image File
cos.SRF Sony Raw Image File
cos.SSI SriSun Image
cos.SSP Axialis Screensaver Image
cos.ST4 SBIG CCD camera ST-X Image
cos.ST4 SBIG CCD camera ST-4 Image
cos.ST5 SBIG CCD camera ST-X Image
cos.ST6 SBIG CCD camera ST-X Image
cos.ST7 SBIG CCD camera ST-X Image
cos.ST8 SBIG CCD camera ST-X Image
cos.STM PhotoStudio Stamp Image
cos.STW Neopaint Stamp Image
cos.STX SBIG CCD camera ST-X Image
cos.SUL Gfa Raytrace Image
cos.SUN Sun Rasterfile
cos.SUNIFF Sun TAAC Image
cos.SVG Scalable Vector Graphics Image
cos.SVGZ GZip Compressed Scalable Vector Graphics Image
cos.SYN Synthetic Universe Image
cos.SYNU Synthetic Universe Image
cos.T1 Male MRI Image
cos.T2 Male MRI Image
cos.TAAC Sun TAAC Image
cos.TAP Oric TAP Image
cos.TARGA Truevision Targa Image
cos.TDI Explore (TDI) & Maya Image
cos.TDIM Digital F/X Image
cos.TEX PaintShopPro Texture
cos.TG4 TG4 Image
cos.TGA Truevision Targa Image
cos.THB KinuPix Skin Image
cos.TIF Tagged Image File Format Image
cos.TIFF Tagged Image File Format Image
cos.TIL Buttonz & Tilez texture
cos.TILE Eclipse Image
cos.TIM Sony Playstation TIM Image
cos.TIM TIFF Revision 6 Image
cos.TN1 Tiny Image
cos.TN2 Tiny Image
cos.TN3 Tiny Image
cos.TNL Thumbnail Image
cos.TNY Tiny Image
cos.TTF Optigraphics Tiled Image
cos.TUB PaintShopPro Picture Tube Image
cos.UPI Ulead PhotoImpact Image
cos.URT Utah raster Image
cos.UYVY YUV 16Bits Image
cos.VDA Video Display Adapter Image
cos.VFF Sun TAAC Image
cos.VGA Windows Bitmap Image
cos.VI Jovian VI Image
cos.VIC Vicar Image
cos.VICAR Vicar Image
cos.VID Vidcom 64 Image
cos.VIF Khoros Visualization Image file
cos.VIF Verity Image
cos.VIFF Khoros Visualization Image file
cos.VIT VITec Image
cos.VOB Vue d'esprit Image
cos.VPB Quantel VPB Image
cos.VST Vista Image
cos.WAD WAD (Half Life) Image
cos.WAL Quake Texture
cos.WAP Wireless Bitmap Image
cos.WBC WebShots Image
cos.WBM Wireless Bitmap Image
cos.WBMP Wireless Bitmap Image
cos.WBZ WebShots Image
cos.WFX WinFAX Image
cos.WPG WordPerfect Graphics Image
cos.WRL VRML2 Image
cos.X Stardent AVS X Image
cos.X11 X Windows System Dump Image
cos.X3F Raw Image File
cos.XAR Xara Image
cos.XBM X Bitmap Image
cos.XCF Gimp Bitmap Image
cos.XIF Xerox DIFF Image
cos.XIM Ximage
cos.XP0 SecretPhotos Puzzle Image
cos.XPM X PixMap Image
cos.XV Khoros Visualization Image file
cos.XWD X Windows System Dump Image
cos.YUV YUV 16Bits Image
cos.YUV YUV 4:1:1 Image
cos.YUV YUV 4:2:2 Image
cos.YUV YUV 4:4:4 Image
cos.ZBR Zoner Zebra Metafile
cos.ZMF Zoner Callisto Metafile
cos.[B] Amica Paint Image
Types of Metadata Files
cos.ABT AbiWord Template
cos.ASA ASP Configuration File
cos.ASX Advanced Stream Redirector
cos.B4S Winamp 3+ Playlist
cos.BTSEARCH BitTorrent Search File
cos.BUP DVD Information File
cos.CGM Computer Graphics Metafile
cos.CKZ CKZ Checksum File
cos.CODE eXtensible Stylesheet Language Transformation File
cos.CONFIG Configuration File
cos.CRC Cyclic Redundancy Check Checksum File
cos.CUE Cue Sheet
cos.DOT Microsoft Word Template
cos.DOTM Microsoft Word XML Template
cos.DOTX Microsoft Open XML Word Template
cos.EMF Enhanced Metafile
cos.IFO DVD Information File
cos.INI Initialization File
cos.M3U MP3 Uniform Resource Locator
cos.MANIFEST Windows Assembly Manifest File
cos.MD5 MD5 Checksum File
cos.MET OS/2 Metafile
cos.MP TeX Metapost Macro
cos.NFO Downloaded Program Information
cos.OTP ODF Presentation Template
cos.OTS ODF Spreadsheet Template
cos.OTT ODF Text Document Template
cos.PAR Parity Checksum File
cos.PLS Playlist
cos.POT Microsoft PowerPoint Template
cos.POTM Microsoft Open XML Macro-Enabled PowerPoint Template
cos.POTX Microsoft Open XML PowerPoint Template
cos.SFV SFV Checksum File
cos.SHAPE Dia Shape File
cos.SRT DVD Subtitles File
cos.STC OpenOffice.org 1.0 Spreadsheet Template
cos.STI OpenOffice.org 1.0 Presentation Template
cos.STW OpenOffice.org 1.0 Text Document Template
cos.SVM StarView MetaFile
cos.TEX TeX PSTricks Macro
cos.TORRENT BitTorrent Tracker File
cos.VLC VLC Media Player Data
cos.VOR StarWriter Template
cos.VOR StarCalc Template
cos.VOR StarImpress Template
cos.WMF Windows Metafile
cos.XLM Microsoft Excel Macro
cos.XLT Microsoft Excel Template
cos.XLTM Microsoft Excel XML Template
cos.XLTX Microsoft Excel XML Template
cos.XLW Microsoft Excel Workspace
cos.XSPF XML Shareable Playlist Format
Types of Plugins
cos.XPI Firefox Plugin
Types of Presentations
cos.ODG ODF Drawing Presentation
cos.ODP ODF Presentation
cos.PPS Microsoft PowerPoint Show
cos.PPSX Microsoft Open XML PowerPoint Show
cos.PPT Microsoft PowerPoint Presentation
cos.PPTM Microsoft Open XML Macro-Enabled PowerPoint Presentation
cos.PPTX Microsoft Open XML PowerPoint Presentation
cos.SDA StarDraw Drawing
cos.SDD StarDraw Drawing
cos.SDD StarImpress Presentation
cos.SXD Microsoft OpenOffice.org 1.0 Drawing
cos.SXI OpenOffice.org 1.0 Presentation
cos.UOF Unified Office Format Presentation
cos.UOP Unified Office Format Presentation
Types of Shell Scripts
cos.AU3 AutoIt Script
cos.BAT Windows Batch File
cos.BSH Bash Shell Script
cos.SH Unix Shell Script
Types of Source Code
cos.ASAX ASP.Net Open XML Configuration File
cos.ASP Active Server Page Source File
cos.ASPX ASP.Net Open XML Source File
cos.C C Source File
cos.CGI Perl Source File
cos.CPP C++ Source File
cos.CS C# Source File
cos.CSPROJ C# Project File
cos.CSS Cascading Style Sheets Source File
cos.CXX C++ Source File
cos.H C Header File
cos.HPP C++ Header File
cos.HTA
cos.HTM Hypertext Markup Language Source File
cos/value/cos Hypertext Markup Language Source File
cos.JAVA JAVA Source File
cos.JS JavaScript Source File
cos.JSP JavaServer Pages Source File
cos.MHT
cos./value/cos
cos.PHP PHP Source File
cos.PHP3 PHP3 Source File
cos.PL Perl Source File
cos.PM Perl Module
cos.RC C++ Resource Compiler Script
cos./value/cos Server Side Includes/value/cos File
cos.SQL SQL Database Query
cos.STM Server Side Includes/value/cos File
cos.VB Visual Basic .Net Source File
cos.VBPROJ Visual Basic .Net Project File
cos.VBS Visual Basic Script
cos.XAML Extensible Application Markup Language
cos.XML Extensible Markup Language
Types of Spreadsheets
cos.123 IBM Lotus 1-2-3 Spreadsheet
cos.DIF Data Interchange Format Document
cos.ODS ODF Spreadsheet
cos.PXL Pocket Excel Spreadsheet
cos.SDC StarCalc Spreadsheet
cos.SLK SYLK Spreadsheet
cos.SXC OpenOffice.org 1.0 Spreadsheet
cos.UOF Unified Office Format Spreadsheet
cos.UOS Unified Office Format Spreadsheet
cos.WB2 Quattro Pro Spreadsheet
cos.WK1 Lotus 1-2-3 Spreadsheet
cos.WKS Lotus 1-2-3 Spreadsheet
cos.XLC Microsoft Excel Chart
cos.XLS Microsoft Excel Spreadsheet
cos.XLSB Microsoft Excel Binary Spreadsheet
cos.XLSM Microsoft Open XML Macro-Enabled Excel Spreadsheet
cos.XLSX Microsoft Open XML Excel Spreadsheet
Types of Videos
cos.3G2 3G Mobile Phone Video
cos.3GP 3G Mobile Phone Video
cos.ASF Advanced Systems Format Video
cos.AVI Audio Video Interleave
cos.BIK Bink Video
cos.BIN Binary DVD Video
cos.DAT VCD Video
cos.DIVX DivX Movie
cos.DV Digital Video
cos.FLV Flash Video
cos.GXF General eXchange Format
cos.M1V MPEG-1 Video
cos.M2TS MPEG-2 Transport Stream Videos
cos.M2V MPEG-2 Video
cos.M4V MPEG-4 Video File
cos.MKV Matroska Video Stream
cos.MOV Apple QuickTime Movie
cos.MP4 MPEG-4 Part 14 Multimedia Container
cos.MPEG MPEG Video
cos.MPEG1 MPEG-1 Video
cos.MPEG2 MPEG-2 Video
cos.MPEG4 MPEG-4 Video
cos.MPG MPEG Video
cos.MTS AVCHD Video File
cos.MXF Material eXchange Format
cos.OGM Ogg Multimedia Container File
cos.RM RealMedia Streaming Media File
cos.RMVB RealMedia Variable Bitrate Media File
cos.SWF Adobe Flash Movie
cos.TS DVD Video
cos.VOB DVD Video Object
cos.WMV Windows Media Video
acos   bcos   ccos   dcos   ecos   fcos   gcos   hcos   icos   jcos   kcos   lcos   mcos   ncos   ocos   pcos   qcos   rcos   scos   tcos   ucos   vcos   wcos   xcos   ycos   zcos   0cos   1cos   2cos   3cos   4cos   5cos   6cos   7cos   8cos   9cos