File formats starting with a letter U
File extension The full name of the file
U Subsampled Raw YUV Bitmap Image
U00 The Price Is Right 2010 Game
U01 Barudan Embroidery
U08 UFile Data
U10 UFile 2010 Tax Return Format
U11 UFile 2011 Tax Return Format
U12 UFile 2012 Tax Return Format
U255LAW Exponential 8-bit Sound
U32 Authorware Cover
U3D Universal 3D Format
U3I U3 Application Information Format
U3P U3 Platform Install Format
U8 Lemings 3D Audio Format
U96 EasyZip Temporary
UAE WinUAE Configuration
UAL Entrust Unattended Login Credentials
UAP SIMATIC WinCC User Archive Export
UAQ Microsoft Windows Action Queue
UAS Ulead PhotoImpact Backup
UAV OpenPilot UAV Settings
UAX Unreal Audio Format
UB Unsigned Byte Audio Format
UBJ Universal Binary JSON Fiile
UBM IPhoto Mtwain Install
UBOX Universe Sandbox Saved Data Format
UBR IIS WCAT Configuration
UC UnrealScript Class
UC2 UltraCompressor II Compressed Archive Format
UCCAPILOG Microsoft Windows Live Messenger UCC API Log Format
UCD Prosa Diagram
UCE Microsoft Windows XP System32 Format
UCF WebEx Universal Communications Format
UCI UFS Explorer Backup Format
UCL Unreal Tournament Cache Format
UCLS ObjectAid UML Explorer Class Diagram
UCM Urban Chaos Game Format
UCP SmartWare Communications Profile
UCR MicroSim PCBoard Unrouted Nets Report
UCS Homeworld Localized Unicode Strings
UCSETTINGS Universal Converter Settings
UCT UC Browser Theme Format
UCV Universal Converter Conversion
UCX Rational XDE
UD OmniPage User Dictionary
UDA ZEMAX Model Data
UDB Dynamics AX User Database Format
UDC Adobe User Dictionary Format
UDCX Microsoft Office Universal Data Connection Format
UDEB Debian Package Format
UDF Universal Disk Format
UDG UDraw(Graph)
UDI CorelDRAW Draw Script Textures Bitmap
UDID Google Android Unique Device IDentifier
UDIF Apple Mac OS X Universal Disk Image Format
UDK Unreal Map Format
UDL Microsoft Data Link Format
UDM MapView User Module
UDO Moray UDO 3D
UDP Corel VideoStudio Scene Information
UDS FIMware Database Format
UDW Raw Unsigned DoubleWord (32-bit) Data
UDX PI Expert Design Software
UEA Protector Suite QL Format
UEED Uconomix Encryption Engine Encrypted Directory
UENC UltraEdit Encrypted Text
UES Ulead Photo Explorer Slide Show
UEW UltraEdit Wordfile
UEZ Ulead COOL 3D Graphics
UFA GIF Animator Animation Object Information
UFDR UFED Physical Analyzer Report Package
UFF DataWave SciWorks Physiological Data
UFI UFOCaptureV2
UFO Ulead PhotoImpact Object Format
UFP Ulead Photo Project
UFR Ultra Fractal Format
UFS FreeBSD PC-BSD Unix File System Format
UFSUZIP FreeBSD Compressed Unix File System Format
UFX Ultimate 3D Game Engine Material
UGD Need For Speed Underground
UGR Apophysis Gradient
UHA UHARC Compressed Archive
UHH Eurotherm Hydra History Encrypted
UHS Universal Hint System Binary
UHTM Unreal Tournament
UHTML UHTML Document Format
UI User Interface Format
UIBAK UltraISO Backup Disk Image
UID IBM Voice Type Users
UID-ZPS Zoner Photo Studio Picture Autobackup
UIF MagicISO Universal Image Format
UIL IBM AIX User Interface Language
UIN ICQ 2001 Saved ICQ Contact Information
UIR LabWindows User Interface Resource
UIS WindowBlinds Personality Format
UIT UIX XML Template
UIZ Spybot Search & Destroy Updater
UK English (British) Language Translation
UKA Fifa World Cup Game Data
UKS Microsoft Works
UKX Unreal Tournament Animation Format
UKY UltraMixer Licence Key
ULAW Raw CCITT/ITU G.711 US Telephony Audio Format
ULB COBOL Unisys Library
ULD Unified Luminaire Datafile
ULF Universal List Format
ULS NetMeeting User Location Service Format
ULT Ultratracker Music Module (MOD) Format
ULW U-Law Audio Format
ULYS Ulysses Project
ULZ USBlyzer Data Capture Format
UMB MemMaker Backup
UMD UMD Mobile Ebook
UMF MediaHolder Media Format
UML Visual UML Class Diagram & Model Format
UMLCLASS Java UML Class Model Format
UMLX Visual UML XML Model
UMM Unified Molecular Modeling
UMOD Unreal Tournament MOD Installation Package Format
UMP UModel Project
UMR MyEclipse UML Model Repository
UMS Rune 3D Mesh Format
UMX Deus Ex Format
UNA SIMS Unauthorized Data
UNAUTH SiteMinder Unauthorized Message Format
UNF Btreive Unformatted
UNI UniMOD/MikMOD Music Module Format
UNITY Unity Scene Format
UNITY3D Unity Scene Web Player Format
UNITYPACKAGE Unity Package Format
UNITYPROJ Unity 3D Project
UNIT_VARIANT Total War Unit Variant Settings
UNK UVProbe Format
UNKNOWN Unknown File Extension
UNL Garmin MapSource Unlock Format
UNQ ACT! 3.0 Email Message Attachment
UNR Unreal Map Format
UNS Visual Navigation Suite Export Or Import Settings
UNT AutoCAD Unit Definition Format
UNUSED Photoline 4 Defaults
UNV BusinessObjects Universe
UNX Unix Text Format
UOF Uniform Office Format
UOL PhotoImpact Clipart Image
UOP Unified Office Format Presentation Format
UOS Unified Office Format Spreadsheet Format
UOT Unified Office Format Text Format
UPC Ultimate Paint Component
UPD Update Format
UPDATE ISAPI Update Format
UPDATR IConomy Update Format
UPDF UltraPdf Publication
UPF Nokia Phone Digital Photo Format
UPG Firmware Upgrade Format
UPI Ulead PhotoImpact Plugin
UPJ Ulead Project
UPK Unreal 3 Game Data Package Format
UPK0 Metro 2033 Game
UPL StarMoney Agent Download
UPM PenMail
UPO DBASE Compiled Update Data
UPOI IGO Points Of Interest Format
UPP Ghostscript Uniprint Unified Printer Parameter
UPR FileMaker User Spelling Dictionary
UPS Microsoft Works
UPX Ultimate Packer For EXecutable Format
UPZ StarMoney Agent Download
UQM The Ur-Quan Masters Archive Format
URC Unicenter Remote Control
URD Ultra Recall Database
URD-JOURNAL Ultra Recall Journal Update
URF AppFace Skin
URL Internet Shortcut - URL - Uniform Resource Locator
URLS GetRight Internet Shortcuts List
URL_ Internet Shortcut - URL - Uniform Resource Locator
URP Universal Report
URQ Review QuickChart Chart
URR Uniface Signatures Format
URS ControlDraw User Requirement Specifier
URT Utah Run-Length Encoded Bitmap Image Format
US English Language Translation
US? Microsoft Word Font
USA Microsoft Office Headers Format
USB SiSoftware Sandra
USC USC Module Definition
USECASEDIAGRAM Microsoft Visual Studio Use Case Diagram
USEQ USeq Genome Data Format
USER Microsoft Visual Studio Project User Options Format
USERPROFILE Norton Antivirus User Profile Format
USERTILE-MS Microsoft Windows 8 Release Preview User Tile Format
USF Nintendo Ultra 64 Sound Format
USFLIB Nintendo 64 Song Library Format
USG PC-Doctor For Windows
USH Creston SIMPL Windows
USI UsiXML UI Description
USL ProWORX Nxt USL Loadable
USM USM Game Video Format
USP PageMaker Printer Font
USR FileMaker Pro Runtime Engine Database Application
USS WinUAE Saved State
UST WiFi SiStr Exported User Theme Format
USTAR Uniform Standard Tape Archive Format
USX Unreal StaticMesh (hardware Brushes) Format
UT2 Unreal Tournament Map Format
UT2MOD Unreal Tournament 2003 MOD Installation Package Format
UT3 Unreal Tournament 3 Map Format
UT4MOD Unreal Tournament 2004 MOD Installation Package Format
UT8 Ghost Master Language Format
UTB µTBackup Backup
UTC BioWare Aurora Game Engine Creature Format
UTD BioWare Aurora Game Engine Door
UTE BioWare Aurora Game Engine Encounter
UTF8 Unicode UTF-8 Encoded Text
UTI Spybot - Search & Destroy Includes
UTL QuickBooks Data
UTM BioWare Aurora Game Engine Store
UTP BioWare Aurora Game Engine Placeable Object
UTPART µTorrent Unfinished Download
UTS Spybot - Search & Destroy Include
UTT BioWare Aurora Engine Trigger
UTW Unity Whirld Format
UTX Unreal Texture Format
UTXT Unicode Text Format
UTZ UIQ Theme Package
UU Uuencoded (compressed) File Archive (ascii)
UUD UUDecoded Format
UUE UUEncoded Format
UUS Ultra Utility Skin
UV2 µVision Project
UVCAB UVScreenCamera Films
UVF Uncertain Value Format
UVNTS UVScreenCamera Notes
UVPROJ µVision4 Project
UVS UVScreenCamera Segments
UVSEG UVScreenCamera Segments
UVW 3D Studio MAX UVW Coordinates
UVX Unreal Tournament Saved Game
UW Unsigned Word (16-bit) Music Format
UWF UltraTracker WaveSample Music Format
UWL Corel WordPerfect User Word List Format
UXDC Microsoft Excel Data Retrieval Service Connection
UXF UMLet UML EXchange Format
UXX Unreal Tournament 2003 Cache Format
UXY Barudan Embroidery Outline
UYVY YUV 16-bit Image Format
UZ2 Unreal Tournament Compressed
UZE UltimateZip Compressed Archive
UZIP FreeBSD Compressed Disk Image Format
UZY Backdoor.Sokacaps
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