File Extensions - U

ExtensionSummary
.UUnreal Tournament Class Package
.U10UFile 2010 Tax Return
.U11UFile 2011 Tax Return
.U12UFile 2012 Tax Return
.U3DUniversal 3D File
.U3IU3 Application Information File
.U3PU3 Smart Application
.U8Mario Kart Wii Archive
.UASSETUnreal Asset File
.UAXUnreal Audio Package
.UBUnsigned Byte Audio File
.UBJUniversal Binary JSON File
.UBOXUniverse Sandbox Data File
.UBZOpenBoard Document
.UCUnrealScript Class
.UC2UltraCompressor 2 Archive
.UCCAPILOGMicrosoft UCC API Log File
.UCEWindows UCE System File
.UCFWebEx Media File
.UCIUFS Explorer Backup File
.UCLKilling Floor System File
.UCMCrazy Machines Model File
.UCTUC Browser Theme File
.UDOmniPage User Dictionary
.UDBDynamics AX User Database File
.UDCAdobe InDesign User Dictionary
.UDCXUniversal Data Connection File
.UDEBDebian Package File
.UDFUniversal Disk Format File
.UDKUnreal Engine Map File
.UDLMicrosoft Universal Data Link File
.UDSNetBackup UNIX Domain Socket File
.UEAProtector Suite QL Encrypted Archive
.UF2USB Flashing Format
.UFOUnified Font Object File
.UFRUpfiring File
.UFSFreeBSD Unix File System File
.UFS.UZIPCompressed Unix File System File
.UFTTorque Font Cache File
.UGAUlead GIF Animator File
.UGOIRAUgoira Animated Image File
.UGRApophysis Ultra Fractal Gradient File
.UHAUHarc Compressed Archive
.UHTMLUC Browser Saved Webpage
.UIUser Interface File
.UIBAKUltraISO Backup Disk Image
.UIFUniversal Image Format Disc Image
.UISWindowBlinds User Interface Specification
.UKXUnreal Animation Package
.ULAWRaw u-Law Audio File
.ULDUnified Luminaire Data File
.ULFUniversal List File
.ULPEAGLE User Language Program
.ULSNetMeeting User Location Service File
.ULTUltraTracker Module
.ULWu-Law Audio File
.ULXGlulx Game File
.ULZUSBlyzer Data Capture File
.UMAPUnreal Engine Map File
.UMDSplinter Cell Blacklist Game Data File
.UMFMediaHolder Universal Media Format File
.UMLUML Data Object Model
.UMLCLASSUML Class Model
.UMODUnreal Tournament Module File
.UMSRune 3D Mesh File
.UMXUnreal Music Package
.UNAUTHSiteMinder Unauthorized Message File
.UNFUNIF ROM File
.UNIMikMod UniMOD Module
.UNIFUNIF ROM File
.UNISUniMaker 1.S Course
.UNITYUnity Scene File
.UNITY3DUnity Web Player Archive
.UNITYPACKAGEUnity Package File
.UNITYPROJUnity 3D Project
.UNKUnknown File
.UNKNOWNUnknown File Type
.UNLGarmin Unlock File
.UNRUnreal Level Map
.UNTAutoCAD Unit Definition File
.UNXUnix Text File
.UOFUniform Office Document
.UOPUltima Online Patch File
.UOSUniform Office Spreadsheet
.UOTUniform Office Document
.UPDProgram Update Information
.UPDATEISAPI Update File
.UPDATRiConomy Update File
.UPFMicroStation User Preferences File
.UPGUpgrade File
.UPKUnreal Engine 3 Package
.UPOIiGO Points of Interest File
.UPRFileMaker User Dictionary
.UPSUPS Patch File
.UPXUltimate Packer for eXecutables File
.UQMThe Ur-Quan Masters Game Data File
.URCLURCL Assembly Source Code File
.URLInternet Shortcut
.URRUniface Signatures File
.URTUtah Raster Toolkit File
.USAUnreal Saved Game File
.USDUniversal Scene summary Format
.USDZUniversal Scene summary Zipped Format
.USEQUSeq Genome Data File
.USERVisual Studio Project User Options File
.USERPROFILENorton AntiVirus User Profile File
.USERTILE-MSWindows 8 User Tile File
.USFEVGA Precision X Skin File
.USFLIBNintendo 64 Song Library
.USMUSM Game Video File
.USRLowrance GPS Data File
.USTUTAU Sequence Text File
.USTARUniform Standard Tape Archive Format File
.USXUnreal Static Meshes
.UT2Unreal Tournament Map
.UT2MODUnreal Tournament 2003/2004 Module File
.UT3Unreal Tournament 3 Map File
.UT4MODUnreal Tournament 2004 Module
.UT8Ghost Master Language File
.UTCBioware Creature File
.UTF8Unicode UTF8-Encoded Text Document
.UTMUTM Virtual Machine
.UTWUnity Whirld File
.UTXUnreal Texture Package
.UTXTUnicode Text File
.UTZUIQ Theme Package
.UUUuencoded File
.UUDUUDecoded File
.UUEUuencoded File
.UVFUncertain Value Format
.UVMUnitVM Executable File
.UVWUVW Coordinates File
.UVXUnreal Tournament 2003 Saved Game
.UWUnsigned Word Audio File
.UWFUltraTracker Wave File
.UWLUser Word List File
.UWRFUniversal Web Radio File
.UXFUML eXchange Format
.UXXUnreal Tournament Cache
.UZEDZipped Unicode GEDCOM Genealogy File
.UZIPFreeBSD Compressed Disk Image