U

Extension Abbreviation Extension Full name How to open the File Extension
.u Unreal Tournament Class Package How to open .u file
.u10 UFile 2010 Tax Return How to open .u10 file
.u11 UFile 2011 Tax Return How to open .u11 file
.u12 UFile 2012 Tax Return How to open .u12 file
.u3d Universal 3D File How to open .u3d file
.u3i U3 Application Information File How to open .u3i file
.u3p U3 Smart Application How to open .u3p file
.u8 3D Lemmings Audio File How to open .u8 file
.uasset Unreal Asset File How to open .uasset file
.uax Unreal Audio Package How to open .uax file
.ub Unsigned Byte Audio File How to open .ub file
.ubj Universal Binary JSON File How to open .ubj file
.ubox Universe Sandbox Data File How to open .ubox file
.ubz OpenBoard Document How to open .ubz file
.uc UnrealScript Class How to open .uc file
.uc2 UltraCompressor 2 Archive How to open .uc2 file
.uccapilog Microsoft UCC API Log File How to open .uccapilog file
.uce Windows UCE System File How to open .uce file
.ucf WebEx Media File How to open .ucf file
.uci UFS Explorer Backup File How to open .uci file
.ucl Killing Floor System File How to open .ucl file
.ucm Crazy Machines Model File How to open .ucm file
.uct UC Browser Theme File How to open .uct file
.ud OmniPage User Dictionary How to open .ud file
.udb Dynamics AX User Database File How to open .udb file
.udc Adobe InDesign User Dictionary How to open .udc file
.udcx Universal Data Connection File How to open .udcx file
.udeb Debian Package File How to open .udeb file
.udf Universal Disk Format File How to open .udf file
.udf Microsoft Excel User-defined Function How to open .udf file
.udl Microsoft Universal Data Link File How to open .udl file
.uds Sierra Generations File How to open .uds file
.uds NetBackup UNIX Domain Socket File How to open .uds file
.uds Uniform Data System File How to open .uds file
.uea Protector Suite QL Encrypted Archive How to open .uea file
.uf2 USB Flashing Format How to open .uf2 file
.ufo Ulead File Object How to open .ufo file
.ufo Unified Font Object File How to open .ufo file
.ufr Ultra Fractal File How to open .ufr file
.ufr Upfiring File How to open .ufr file
.ufs FreeBSD Unix File System File How to open .ufs file
.ufs.uzip Compressed Unix File System File How to open .ufs.uzip file
.uft Torque Font Cache File How to open .uft file
.uga Ulead GIF Animator File How to open .uga file
.ugoira Ugoira Animated Image File How to open .ugoira file
.ugr Apophysis Ultra Fractal Gradient File How to open .ugr file
.uha UHarc Compressed Archive How to open .uha file
.uhtml UC Browser Saved Webpage How to open .uhtml file
.ui User Interface File How to open .ui file
.uibak UltraISO Backup Disk Image How to open .uibak file
.uif Universal Image Format Disc Image How to open .uif file
.uis WindowBlinds User Interface Specification How to open .uis file
.ukx Unreal Animation Package How to open .ukx file
.ulaw Raw u-Law Audio File How to open .ulaw file
.uld Unified Luminaire Data File How to open .uld file
.ulf Universal List File How to open .ulf file
.ulp EAGLE User Language Program How to open .ulp file
.uls NetMeeting User Location Service File How to open .uls file
.ult UltraTracker Module How to open .ult file
.ulw u-Law Audio File How to open .ulw file
.ulx Glulx Game File How to open .ulx file
.ulz USBlyzer Data Capture File How to open .ulz file
.umap Unreal Engine Map File How to open .umap file
.umd Splinter Cell Blacklist Game Data File How to open .umd file
.umf MediaHolder Universal Media Format File How to open .umf file
.uml UML Data Object Model How to open .uml file
.umlclass UML Class Model How to open .umlclass file
.umod Unreal Tournament Module File How to open .umod file
.ums Rune 3D Mesh File How to open .ums file
.umx Unreal Music Package How to open .umx file
.unauth SiteMinder Unauthorized Message File How to open .unauth file
.unf UNIF ROM File How to open .unf file
.uni MikMod UniMOD Module How to open .uni file
.unif UNIF ROM File How to open .unif file
.unity Unity Scene File How to open .unity file
.unity3d Unity Web Player Archive How to open .unity3d file
.unitypackage Unity Package File How to open .unitypackage file
.unityproj Unity 3D Project How to open .unityproj file
.unk Unknown File How to open .unk file
.unknown Unknown File Type How to open .unknown file
.unl Garmin Unlock File How to open .unl file
.unr Unreal Level Map How to open .unr file
.unt AutoCAD Unit Definition File How to open .unt file
.unx Unix Text File How to open .unx file
.uof Uniform Office Document How to open .uof file
.uop Uniform Office Presentation How to open .uop file
.uop Ultima Online Patch File How to open .uop file
.uos Uniform Office Spreadsheet How to open .uos file
.uot Uniform Office Document How to open .uot file
.upd Program Update Information How to open .upd file
.update ISAPI Update File How to open .update file
.updatr iConomy Update File How to open .updatr file
.upf MicroStation User Preferences File How to open .upf file
.upf Unified Power Format File How to open .upf file
.upf Panono Unstitched Panorama Format How to open .upf file
.upg Upgrade File How to open .upg file
.upoi iGO Points of Interest File How to open .upoi file
.upr Fractal Parameters File How to open .upr file
.upr FileMaker User Dictionary How to open .upr file
.ups UPS Patch File How to open .ups file
.upx Ultimate Packer for eXecutables File How to open .upx file
.uqm The Ur-Quan Masters Game Data File How to open .uqm file
.urcl URCL Assembly Source Code File How to open .urcl file
.url Internet Shortcut How to open .url file
.urr Uniface Signatures File How to open .urr file
.urt Utah Raster Toolkit File How to open .urt file
.usa Unreal Saved Game File How to open .usa file
.usd Universal Scene Description Format How to open .usd file
.usdz Universal Scene Description Zipped Format How to open .usdz file
.useq USeq Genome Data File How to open .useq file
.user Visual Studio Project User Options File How to open .user file
.userprofile Norton AntiVirus User Profile File How to open .userprofile file
.usertile-ms Windows 8 User Tile File How to open .usertile-ms file
.usf EVGA Precision X Skin File How to open .usf file
.usflib Nintendo 64 Song Library How to open .usflib file
.usm USM Game Video File How to open .usm file
.usr SmartMusic Custom File How to open .usr file
.usr FileMaker Pro Database File How to open .usr file
.usr Lowrance GPS Data File How to open .usr file
.ust UTAU Sequence Text File How to open .ust file
.ustar Uniform Standard Tape Archive Format File How to open .ustar file
.usx Unreal Static Meshes How to open .usx file
.ut2 Unreal Tournament Map How to open .ut2 file
.ut2mod Unreal Tournament 2003/2004 Module File How to open .ut2mod file
.ut3 Unreal Tournament 3 Map File How to open .ut3 file
.ut4mod Unreal Tournament 2004 Module How to open .ut4mod file
.ut8 Ghost Master Language File How to open .ut8 file
.utc Bioware Creature File How to open .utc file
.utf8 Unicode UTF8-Encoded Text Document How to open .utf8 file
.utm UTM Virtual Machine How to open .utm file
.utw Unity Whirld File How to open .utw file
.utx Unreal Texture Package How to open .utx file
.utxt Unicode Text File How to open .utxt file
.utz UIQ Theme Package How to open .utz file
.uu Uuencoded File How to open .uu file
.uud UUDecoded File How to open .uud file
.uue Uuencoded File How to open .uue file
.uvf Uncertain Value Format How to open .uvf file
.uvm UnitVM Executable File How to open .uvm file
.uvw UVW Coordinates File How to open .uvw file
.uvx Unreal Tournament 2003 Saved Game How to open .uvx file
.uw Unsigned Word Audio File How to open .uw file
.uwf UltraTracker Wave File How to open .uwf file
.uwl User Word List File How to open .uwl file
.uwrf Universal Web Radio File How to open .uwrf file
.uxf UML eXchange Format How to open .uxf file
.uxx Unreal Tournament Cache How to open .uxx file
.uzed Zipped Unicode GEDCOM Genealogy File How to open .uzed file
.uzip FreeBSD Compressed Disk Image How to open .uzip file