The Known File Extensions/Types References – U*

Posted by Admin L in IT Resources/Information on 09-12-2011.

Collector: Nosa Lee
Original Address: https://www.seeksunslowly.com/file-extensions-types-references-u
To reprint this article, please indicate the source, thank you.
_____________________________________

Now, I collected all the known file extensions/types for your reference, I grouped them according to the first character due to there are too many file extensions/types.

The following file extensions/types are grouped as U*, to refer to more file extensions/types or download them (a compressed txt file that separates the extension and description with ” : “), please click the following links.

A B C D E F G H I J K L M N

O P Q R S T U V W X Y Z
Number  Symbol

Download All File Types/Extensions in ONE Compressed File

U   Unreal Tournament 2003 System File (Epic Games, Inc.)
U   Subsampled Raw YUV Bitmap
U   Unreal System File
U   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
U   Nitpicker Ipflow File
U2   Telelogic Tau UML Model
U2E   Unreal Game Translation
U2P   Telelogic Tau UML Program Text File
U3D   Ultimate3D Engine 3D Engine (Ultimate3D)
U3D   Universal 3D File
U3I   Sandisk Launchpad Application Installer file (SanDisk Corporation)
U3P   U3 Platform Install File (U3 LLC.)
U4A   UnInstaller Archive
U8   Raw Unsigned 8-Bit Audio Data
U96   EasyZip Temporary File
U98   Urdu 98 Document
UAE   WinUAE 0.8.22 Game Configuration File
UAP   User Agent Wireless Telephony Profile
UAS   PhotoImpact Backup/Recovery File (Ulead Systems, Inc.)
UAX   Undying
UAX   Unreal / Unreal 2
UAX   Rune
UAX   Deus Ex
UAX   Harry Potter
UAX   Unified Application eXchange Format (UAX Project)
UAX   Unreal Tournament 2003 Sound (Epic Games, Inc.)
UAX   Unreal Audio File (Epic Games, Inc.)
UB   Audio
UB   Raw Unsigned Byte (8-bit) Data
UBB   BASIC UBAS File
UBD   BASIC UBAS File
UBK   National Construction Estimator 32 User Costbook
UBK   Embiid Reader eBook (Embiid Inc.)
UBM   Iphoto Mtwain Install File
UBS   Tracesrv Bugslayer Utility File
UC   Unreal Tournament Code File (Epic Games, Inc.)
UC   AutoCut Flash Firmware File (Autometrix)
UC2   UltraCompressor II Compressed Archive (AIPNL)
UCC   National UCC Financing Statement Software Uniform Commercial Code Form (National LawForms, Inc.)
UCD   Prosa/ OM Use Case Diagram
UCE   UniCode Extensions
UCF   Epson Personal Settings Information (Epson Corporation)
UCF   Xilinx Foundation User Constraint File
UCG   ULEAD MediaStudio CG Infinity Graphic (Corel Corporation)
UCI   Samsung YP-P2 Theme
UCM   Urban Chaos Game File
UCMN   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UCN   U-Act Configurator Configuration Storage File (Unisys)
UCN   Compressed Archive
UCR   MicroSim PCBoard Unrouted Nets Report
UCS   Universal Classification Standard Database File
UCS   Homeworld Localized Unicode Strings (Sierra Entertainment, Inc.)
UCSETTINGS   Universal Converter Configuration File (Anthony R. Daly)
UCV   Universal Converter Conversion File (Anthony R. Daly)
UCX   Rational XDE (IBM)
UD   AOL 4.0 (America Online, Inc.)
UD   OmniPage User Dictionary (Nuance Communications, Inc.)
UDB   VBA32 Antivirus Signature File (VirusBlokAda Ltd.)
UDB   Windows2000 Uniqueness Database File (Microsoft Corporation)
UDB   PINO 3-Server File
UDB   Works File (Microsoft Corporation)
UDC   Systems Management Server (SMS) Collection Evaluator Updates Collection (Microsoft Corporation)
UDC   Fh5 US English File
UDC   Acrobat Spelling File (Adobe Systems Incorporated)
UDD   OllyDbg Module Information (Oleh Yuschuk)
UDF   Uyap Dokuman Editoru Document (T黵kiye Barolar Birliği)
UDF   Excel User Defined Function (Microsoft Corporation)
UDF   X-ray Diffraction Data File Format
UDF   Windows NT Uniqueness Database File
UDF   Photostyler Image Filter
UDI   Dazzle DVD Complete (Pinnacle Systems, Inc.)
UDI   Corel Graphics Ver 10 Draw Script Textures Bitmap File (Corel)
UDL   Data Link (Microsoft Corporation)
UDL   ADONIS User Export From Database (BOC Group)
UDM   MapView User-Defined Module (MotCreations)
UDS   NHTSA UDS-1992 Crash Test Data
UDS   Sierra Generations Geneology Family File (Sierra Entertainment, Inc.)
UDS   FIMware Database (Uniform Data System for Medical Rehabilitation, a division of UB Foundation Activities, Inc.)
UDW   Raw Unsigned DoubleWord (32-bit) Data
UE2   Encrypted Archive
UEED   Uconomix Encryption Engine Encrypted Directory (Uconomix Technologies Pvt Ltd)
UEEF   Uconomix Encryption Engine Encrypted File (Uconomix Technologies Pvt Ltd)
UEF   Unified Emulator Format
UENC   UltraEdit Encrypted File (IDM Computer Solutions, Inc.)
UEZ   COOL 3D (Ulead Systems, Inc.)
UFA   GIF Animator Animation Object Information (Ulead)
UFA   UFA Compressed File Archive
UFD   PDP-10 User File Directory
UFF   DataWave Physiological Data File
UFI   UFOCaptureV2 Presets (SonotaCo)
UFO   Total Annihilation Third-party Unit (Cavedog Entertainment)
UFO   PhotoImpact Graphic (Ulead Systems, Inc.)
UFO   Ellisys Visual USB Data (Ellisys)
UFSD   UFS Explorer Professional Recovery RAW Recovery Signatures Database (SysDevSoftware)
UG   Drawing File
UGA   Ulead GIF Animator Project File (Corel Corporation)
UH   Age of Kings (Microsoft Corporation)
UHA   UHARC Compressed Archive
UHS   Universal Hint System File (Universal Hint System)
UHTM   Unreal Tournament File
UI   User Interface
UI   Geoworks UI Compiler Espire Source
UI   Qt User Interface (Qt Software)
UID   IBM Voice Type Users File (IBM)
UIF   WordPerfect Long Prompts (Corel Corporation)
UIF   Magic ISO Universal Image Format File (MagicISO Inc.)
UIH   Geoworks UI Compiler Espire Header
UIL   X-Motif UIL Table
UIN   ICQ 2001+ Saved ICQ Contact Information (ICQ Inc.)
uindex   Newsgroup Index File
UIR   LabWindows User Interface Resource (National Instruments Corporation)
UIS   WindowBlinds Skin
UKA   Fifa World Cup Game Data fe Art Legalscr File
UKA   UKA Data Archive (HRM Systems AG, CH-Winterthur)
UKS   Works File (Microsoft Corporation)
UKX   Unreal Tournament 2003 Animation (Epic Games, Inc.)
UK_   Mcguiness File
UL   uLAW Audio File
ULD   Procomm Uploaded Files
ULF   Uniware Layout File (Uniware)
ULP   Peugeot Diag 2000 File
ULP   EAGLE Layout Editor Script (CadSoft Computer GmbH)
ULS   Internet Location Service
ULT   UltraTracker Music Module
ULW   ULAW – Sun/NeXT
ULX   CLAN Lexical File (Child Language Data Exchange System)
ULX   Glulx Game
ULZ   USBlyzer (USBlyzer)
UM   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UM   The Land Of UM World File
UMB   MemMaker Backup Archive
UMD   UMD Photobook
UMI   CDDB Database and PC Music Library in PlayCenter
UML   Visual UML Class Diagram & Model (Visual Object Modelers, Inc.)
UMOD   Unreal Self-extracting MOD File (Epic Games)
UMOD   Unreal Tournament (Epic Games, Inc.)
UMP   UModel Project (Altova)
UMR   MyEclipse UML Model Repository (Genuitec, LLC.)
UMS   Rune
UMX   Unreal Tournament 2003 Music (Epic Games, Inc.)
UMX   Unreal/Unreal Tournament Music File (Epic Games, Inc.)
UMX   Deus Ex
UMX   Harry Potter
UMX   U-MYX Player Song Mix Data and Timing Info (U-MYX Ltd.)
UNASSIGNED   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UNC   Files and Settings Transfer Wizard Output Folder (Microsoft Corporation)
UNCIAL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UND   A86 Assembler Undefined Symbols
UNF   Btreive Unformatted File
UNI   MikMod (UniMod) Format
UNI   Forcast Pro Data File
UNIKEY   Unikey Software Protection Solution (SecuTech Solution Inc.)
UNION   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UNIVERSAL3   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UNIX   UNIX File
UNIX   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UNKNOWN   [None]
UNL   Informix Binary File Created by UNLOAD Command
UNLOCK   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UNM   XMap Flight Plan or Flight Plan Statistic File (Delorme)
UNPAC   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UNPACK   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UNQ   Fax View File
UNQ   ACT! Saved Unknown Attachment (Best Software CRM Division)
UNR   Unreal Map File
UNS   Visual Navigation Suite Export/Import Settings (Jeppesen Marine, Inc.)
UNT   AutoCAD Unit Definition (Autodesk, Inc.)
UNUSED   Photoline4 Defaults File
UNV   Forecast Pro Univariate Forecast File (Business Forecast Systems, Inc.)
UNV   BusinessObjects/WebIntelligence Universe File
UNV   SDRC I-DEAS File
UNX   Text File
UNX   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UN_   Ntgraph Setup30 file
UOF   Uniform Office Format
UOL   PhotoImpact Object Library File
UP   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UP2   Cool3d Plug-ins Board File
UPC   Ultimate Paint (J-T-L Development Inc.)
UPCASE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UPD   dBASE Update File
UPD   VideoStudio Scene Information (Ulead Systems, Inc.)
UPD   Updated Program Data
UPD   Universal Print Driver
UPD   Ulead Private Data (Corel Corporation)
UPD   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UPD   ProUpdater Per/Directory Options Setting File
UPDATE   ISAPI Loader New ISAPI Application (EGGcentric)
UPDATE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UPDATE   Program or Data File Update
UPDATEALL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UPDATEINFO   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UPDATES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UPDF   UltraPdf Publication (Software995)
UPF   Nokia Phone Digital Photo (Nokia)
UPF   Universal Picture Format Bitmap
UPG   Firmware Upgrade File
UPG   Grafik Anim File
UPI   ULead Photo Impact Program File (Corel Corporation)
UPI   Iphoto4 Programs Plug-in File
UPJ   ULead Project File (Corel Corporation)
UPK   Mass Effect Game File Archive (EA International (Studio and Publishing) Ltd.)
UPL   Starmoney Agent Download File
UPL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UPM   PenMail Document (UC-Logic Technology Corp.)
UPO   dBASE Compiled Update File
UPP   Uniprint Unified Printer Parameter
UPR   FileMaker User Spelling Dictionary
UPS   Works File (Microsoft Corporation)
UPT   Connectivity Memory Model Update Timing Input File
UPX   ULead Photo Express Saved Image File (Corel Corporation)
UPZ   Starmoney Agent Download File
UQM   The Ur-Quan Masters Archive (The Ur-Quan Masters Team)
URBS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
URD   Ultra Recall Database (Kinook Software, Inc.)
URD-JOURNAL   Ultra Recall Journal Update File (Kinook Software, Inc.)
URF   Radar ViewPoint Universal Radar Format
URF   ProWORX Nxt User Configurable Register Editor File (Schneider Electric)
URF   AppFace Skin (Matinsoft Inc.)
URI   List of Uniform Resource Identifiers
URIS   List of Uniform Resource Identifiers
URL   Internet Location
URLS   GetRight URL List (Headlight Software, Inc.)
URS   ControlDraw User Requirements Specifier (ControlDraw Ltd.)
URT   Utah Raster Image
US   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
USA   Unreal Saved Game File
USA   Office Header File (Microsoft Corporation)
USAGE   Snort File
USAGE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
USB   USB Protocol Analyzer Trace
USB   Syssoft Sandra File
USB   D-Link FM Radio Update
USD   Epson PRINT Image Framer (PIF) Framer File (Seiko Epson Corp.)
USE   MKS Source Integrity File
USE   Log File
USE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
USER   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
USERPROFILE   Live Update User Profile (Symantec Corporation)
USF   Core Media Player XML Universal Subtitle Format File (CoreCodec, Inc.)
USF   Nintendo Ultra 64 Sound Format (Nintendo)
USI   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
USI   UsiXML UI Description File (Universite Catholique de Louvain-la-Neuve)
USK   Ultraplayer Ultraplayer Playlist File (UltraCo, Inc)
USL   LaserJet Landscape Font
USL   ProWORX Nxt USL Loadables (Schneider Electric)
USL   PC-Bibliothek User Dictionary (Bibliographisches Institut & F.A. Brockhaus AG)
USP   LaserJet Portrait Font
USP   PageMaker Printer Font (Adobe Systems Incorporated)
USP   SIMCA-P/SIMCA-P+ Project (Umetrics AB)
USR   MicroImages User-specific Information (MicroImages, Inc.)
USR   ERGO Receiver Configuration File (Creative Express Corporation)
USR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
USR   Uplink Player Information File (Introversion Software)
USR   Daqarta Extended Audio Data (Interstellar Research)
USR   FileMaker Pro Runtime Engine Database Application (FileMaker, Inc.)
USR   Pegasus Mail User Information (David Harris)
USR   User Database
USR   Photo Paint User Defined Filter (Corel)
USS   WinUAE Saved State
USS   PhotoImpact Exported Slicing Pattern (Ulead Systems, Inc.)
UST   WiFi SiStr Exported User Theme (DNsoft.be)
USTAR   POSIX tar Compressed Archive
USX   Unreal Tournament 2003 Static Mesh (Epic Games, Inc.)
USYM   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
USZ   UsiXML UI Description File (Universite Catholique de Louvain-la-Neuve)
UT2   Unreal Tournament Map (Epic Games, Inc.)
UT2MOD   Unreal Tournament 2003 Game Modification File (Epic Games)
UT3   Unreal Tournament 3 Map (Epic Games, Inc.)
UT4MOD   Unreal Tournament 2004 MOD Installation Package (Epic Games)
UTC   BioWare Aurora Engine Creature (BioWare Corp.)
UTD   BioWare Aurora Engine Doors (BioWare Corp.)
UTE   Rukus 110 File
UTE   BioWare Aurora Engine Encounter (BioWare Corp.)
UTF   AOL Updating Files (America Online, Inc.)
UTI   BioWare Aurora Engine Item (BioWare Corp.)
UTI   SafeGuard PrivateCrypto Encrypted Archive (Utimaco Safeware AG)
UTI   Spybot – Search & Destroy Usage Tracking (PepiMK Software)
UTIL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UTIL2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UTILITIES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UTILITY   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UTILS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UTL   QuickBooks Data (Intuit Inc.)
UTL   Sound File
UTM   BioWare Aurora Engine Store (BioWare Corp.)
UTMP   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UTP   BioWare Aurora Engine Placeable Object (BioWare Corp.)
UTP   BinPatch Patch Data File
UTS   Spybot – Search & Destroy Include File (PepiMK Software)
UTS   BioWare Aurora Engine Sound (BioWare Corp.)
UTT   BioWare Aurora Engine Trigger (BioWare Corp.)
UTW   BioWare Aurora Engine Waypoint (BioWare Corp.)
UTX   Undying
UTX   Unicode File
UTX   Harry Potter
UTX   Deus Ex
UTX   Unreal Tournament 2003 (or UT 99) Texture (Epic Games, Inc.)
UTX   Rune
UTXT   Various Programs Unicode Text File
UU   Compressed Archive File
UUCP   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UUD   Uudecoded
UUE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
UUE   Uuencoded
UUT   Genesis 2000 (Genesis 2000, Inc.)
UV   EA Games Video File (Electronic Arts, Inc.)
UV2   Jane’s Combat Simulations F-15
UVP   ULEAD MediaStudio Video Paint Graphic (Corel Corporation)
UVR   Ulead Cool 360 Viewer File (Corel Corporation)
UVV   Listlabl File
UVW   geoManager/geoInterface User View
UVX   Unreal Tournament 2003 Saved Game (Epic Games, Inc.)
UW   Raw Unsigned Word (16-bit) Data
UW   Audio
UW   Unitype GlobalWriter File
UWF   UltraTracker Wave File
UWL   GroupWise User Word List (Novell, Inc.)
UWL   WordPerfect User Word List (Corel Corporation)
UWS   UniTrader 2006 Website Archive (UniTechnology Limited)
UWT   UniTrader Template Archive (UniTechnology Ltd.)
UX   UNIX File
UXD   URLBase URL Database (Terria Development)
UXF   UMLet UML eXchange Format (UMLet Team)
UXP   URLBase URL Database (v. 5.1) (Terria Development)
UXX   Unreal Tournament 2003 Cache (Epic Games, Inc.)
UXY   Orchida Embroidery System (Orchida Soft)
UYVY   Interleaved YUV Raw Image
UYVY   ImageMagick Ver. 5.3.2 Perlmagick File (ImageMagick Studio LLC)
UZ   Unreal Tournament Server File
UZE   Ultimate Zip Compresion Agent
UZR   UZR 3D Streamable 3D File Format

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z  Number  Symbol

Download All File Types/Extensions in ONE Compressed File

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