| 1 |
.U File Extension |
Unreal Tournament Class Package |
| 2 |
.U00 File Extension |
The Price Is Right 2010 Game |
| 3 |
.U01 File Extension |
Barudan Embroidery |
| 4 |
.U08 File Extension |
UFile Data |
| 5 |
.U10 File Extension |
UFile 2010 Tax Return |
| 6 |
.U11 File Extension |
UFile 2011 Tax Return |
| 7 |
.U12 File Extension |
UFile 2012 Tax Return |
| 8 |
.U14 File Extension |
Embird Embroidery Software Data Format |
| 9 |
.U255LAW File Extension |
Exponential 8-bit Sound |
| 10 |
.U2CAR File Extension |
NFS:U2 Car |
| 11 |
.U32 File Extension |
Authorware Cover |
| 12 |
.U3D File Extension |
Universal 3D Format |
| 13 |
.U3I File Extension |
U3 Application Information Format |
| 14 |
.U3P File Extension |
U3 Smart Application |
| 15 |
.U8 File Extension |
3D Lemmings Audio Format |
| 16 |
.U96 File Extension |
EasyZip Temporary |
| 17 |
.UAE File Extension |
WinUAE Configuration |
| 18 |
.UAL File Extension |
Entrust Unattended Login Credentials |
| 19 |
.UAP File Extension |
SIMATIC WinCC User Archive Export |
| 20 |
.UAQ File Extension |
Microsoft Windows Action Queue |
| 21 |
.UAR File Extension |
Uniface Deployment Archive Format |
| 22 |
.UAS File Extension |
Ulead PhotoImpact Backup |
| 23 |
.UASSET File Extension |
UnrealEd Resource Format |
| 24 |
.UAV File Extension |
OpenPilot UAV Settings |
| 25 |
.UAX File Extension |
Unreal Audio Package |
| 26 |
.UB File Extension |
Unsigned Byte Audio Format |
| 27 |
.UBIFS File Extension |
Linux UBIFS Image |
| 28 |
.UBJ File Extension |
Universal Binary JSON Format |
| 29 |
.UBM File Extension |
IPhoto Mtwain Install |
| 30 |
.UBOT File Extension |
UBot Project Format |
| 31 |
.UBOX File Extension |
Universe Sandbox Data Format |
| 32 |
.UBR File Extension |
IIS WCAT Configuration |
| 33 |
.UBX File Extension |
U-center UBX GPS Log Data Format |
| 34 |
.UBZ File Extension |
Open-Sankore Document Format |
| 35 |
.UC File Extension |
UnrealScript Class |
| 36 |
.UC2 File Extension |
UltraCompressor 2 Archive |
| 37 |
.UCB File Extension |
Unstoppable Copier Batch Scirpt Format |
| 38 |
.UCCAPILOG File Extension |
Microsoft UCC API Log Format |
| 39 |
.UCD File Extension |
Prosa Diagram |
| 40 |
.UCE File Extension |
Windows UCE System Format |
| 41 |
.UCF File Extension |
WebEx Media Format |
| 42 |
.UCI File Extension |
UFS Explorer Backup Format |
| 43 |
.UCL File Extension |
Unreal Tournament Cache Format |
| 44 |
.UCLS File Extension |
ObjectAid UML Explorer Class Diagram |
| 45 |
.UCM File Extension |
Crazy Machines Model Format |
| 46 |
.UCP File Extension |
SmartWare Communications Profile |
| 47 |
.UCR File Extension |
MicroSim PCBoard Unrouted Nets Report |
| 48 |
.UCS File Extension |
Homeworld Localized Unicode Strings |
| 49 |
.UCSETTINGS File Extension |
Universal Converter Settings |
| 50 |
.UCT File Extension |
UC Browser Theme Format |
| 51 |
.UCV File Extension |
Universal Converter Conversion |
| 52 |
.UCX File Extension |
Rational XDE |
| 53 |
.UD File Extension |
OmniPage User Dictionary |
| 54 |
.UDA File Extension |
ZEMAX Model Data |
| 55 |
.UDB File Extension |
Dynamics AX User Database Format |
| 56 |
.UDC File Extension |
Adobe InDesign User Dictionary |
| 57 |
.UDCX File Extension |
Universal Data Connection Format |
| 58 |
.UDEB File Extension |
Debian Package Format |
| 59 |
.UDF File Extension |
Universal Disk Format |
| 60 |
.UDG File Extension |
UDraw(Graph) |
| 61 |
.UDI File Extension |
CorelDRAW Draw Script Textures Bitmap |
| 62 |
.UDID File Extension |
Google Android Unique Device IDentifier |
| 63 |
.UDIF File Extension |
Apple Mac OS X Universal Disk Image Format |
| 64 |
.UDK File Extension |
Unreal Engine Map Format |
| 65 |
.UDL File Extension |
Microsoft Universal Data Link Format |
| 66 |
.UDM File Extension |
MapView User Module |
| 67 |
.UDO File Extension |
Moray UDO 3D |
| 68 |
.UDP File Extension |
Corel VideoStudio Scene Information |
| 69 |
.UDR File Extension |
Jade Unstructured Data Resource Format |
| 70 |
.UDS File Extension |
FIMware Database Format |
| 71 |
.UDT File Extension |
User Defined Type Data Format |
| 72 |
.UDW File Extension |
Raw Unsigned DoubleWord (32-bit) Data |
| 73 |
.UDX File Extension |
PI Expert Design Software |
| 74 |
.UDZ File Extension |
UDA ConstructionSuite Data Format |
| 75 |
.UEA File Extension |
Protector Suite QL Encrypted Archive |
| 76 |
.UEC File Extension |
UltraEdit Settings Format |
| 77 |
.UEED File Extension |
Uconomix Encryption Engine Encrypted Directory |
| 78 |
.UEF File Extension |
Unified Emulator Format |
| 79 |
.UEL File Extension |
Tekla Structures Custom Components Data Format |
| 80 |
.UEM File Extension |
LDC Region Data Format |
| 81 |
.UENC File Extension |
UltraEdit Encrypted Text |
| 82 |
.UES File Extension |
Ulead Photo Explorer Slide Show |
| 83 |
.UEW File Extension |
UltraEdit Wordfile |
| 84 |
.UEZ File Extension |
Ulead COOL 3D Graphics |
| 85 |
.UF File Extension |
Crestron SIMPL+ X Generation Compiled Data Format |
| 86 |
.UFA File Extension |
GIF Animator Animation Object Information |
| 87 |
.UFC File Extension |
SATURN Suite |
| 88 |
.UFDR File Extension |
UFED Physical Analyzer Report Package |
| 89 |
.UFF File Extension |
DataWave SciWorks Physiological Data |
| 90 |
.UFI File Extension |
UFOCaptureV2 |
| 91 |
.UFM File Extension |
Unicode TrueType Font Format |
| 92 |
.UFO File Extension |
Ulead Format Object |
| 93 |
.UFP File Extension |
Ulead Photo Project |
| 94 |
.UFR File Extension |
Ultra Fractal Format |
| 95 |
.UFRAW File Extension |
UFRaw Data Format |
| 96 |
.UFS File Extension |
FreeBSD Unix Format System Format |
| 97 |
.UFS.UZIP File Extension |
Compressed Unix Format System Format |
| 98 |
.UFX File Extension |
Ultimate 3D Game Engine Material |
| 99 |
.UGC File Extension |
Ace Of Spades Game Data Format |
| 100 |
.UGD File Extension |
Need For Speed Underground |
| 101 |
.UGI File Extension |
MultiGo Game Data Format |
| 102 |
.UGP File Extension |
Aroma Unit Genome Position Data Format |
| 103 |
.UGR File Extension |
Apophysis Gradient |
| 104 |
.UGZ File Extension |
MultiGo Compressed Game Data Format |
| 105 |
.UHA File Extension |
UHarc Compressed Archive |
| 106 |
.UHH File Extension |
Eurotherm Hydra History Encrypted |
| 107 |
.UHS File Extension |
Universal Hint System Binary |
| 108 |
.UHTM File Extension |
Unreal Tournament |
| 109 |
.UHTML File Extension |
UHTML Document Format |
| 110 |
.UI File Extension |
User Interface Format |
| 111 |
.UIBAK File Extension |
UltraISO Backup Disk Image |
| 112 |
.UIC File Extension |
COCO Unit ICon |
| 113 |
.UID File Extension |
IBM Voice Type Users |
| 114 |
.UID-ZPS File Extension |
Zoner Photo Studio Picture Autobackup |
| 115 |
.UIF File Extension |
Universal Image Format Disc Image |
| 116 |
.UIL File Extension |
IBM AIX User Interface Language |
| 117 |
.UIN File Extension |
ICQ 2001 Saved ICQ Contact Information |
| 118 |
.UIR File Extension |
LabWindows User Interface Resource |
| 119 |
.UIS File Extension |
WindowBlinds User Interface Specification |
| 120 |
.UIT File Extension |
UIX XML Template |
| 121 |
.UITEST File Extension |
Microsoft Visual Studio Data Format |
| 122 |
.UIX File Extension |
UiXML Page |
| 123 |
.UIZ File Extension |
Spybot Search & Destroy Updater |
| 124 |
.UK File Extension |
English (British) Language Translation |
| 125 |
.UKA File Extension |
Fifa World Cup Game Data |
| 126 |
.UKE File Extension |
Ulead VideoStudio Data Format |
| 127 |
.UKR File Extension |
Adobe Acrobat Language Resource Data Format |
| 128 |
.UKS File Extension |
Microsoft Works |
| 129 |
.UKX File Extension |
Unreal Animation Package |
| 130 |
.UKY File Extension |
UltraMixer Licence Key |
| 131 |
.UL File Extension |
Windows Updates Downloader Update List Format |
| 132 |
.ULAW File Extension |
Raw U-Law Audio Format |
| 133 |
.ULB File Extension |
COBOL Unisys Library |
| 134 |
.ULC File Extension |
RevaSoft ULC Application Format |
| 135 |
.ULD File Extension |
Unified Luminaire Datafile |
| 136 |
.ULF File Extension |
Universal List Format |
| 137 |
.ULG File Extension |
ULG Bitmap Image Format |
| 138 |
.ULI File Extension |
Microsoft Office Data Format |
| 139 |
.ULP File Extension |
EAGLE Script |
| 140 |
.ULS File Extension |
NetMeeting User Location Service Format |
| 141 |
.ULT File Extension |
UltraTracker Module |
| 142 |
.ULW File Extension |
U-Law Audio Format |
| 143 |
.ULYS File Extension |
Ulysses Project |
| 144 |
.ULZ File Extension |
USBlyzer Data Capture Format |
| 145 |
.UM3 File Extension |
XWE Data Format |
| 146 |
.UM4 File Extension |
Samsung Smart TV Video Format |
| 147 |
.UMAP File Extension |
Unreal Tournament Map Format |
| 148 |
.UMB File Extension |
MemMaker Backup |
| 149 |
.UMC File Extension |
SIMPL Application Format |
| 150 |
.UMD File Extension |
UMD Mobile Ebook |
| 151 |
.UMF File Extension |
MediaHolder Universal Media Format |
| 152 |
.UML File Extension |
UML Data Object Model |
| 153 |
.UMLCLASS File Extension |
UML Class Model |
| 154 |
.UMLX File Extension |
Visual UML XML Model |
| 155 |
.UMM File Extension |
Unified Molecular Modeling |
| 156 |
.UMOD File Extension |
Unreal Tournament Module Format |
| 157 |
.UMP File Extension |
UModel Project |
| 158 |
.UMPROFILE File Extension |
UltraMon Display Profile Format |
| 159 |
.UMR File Extension |
MyEclipse UML Model Repository |
| 160 |
.UMS File Extension |
Rune 3D Mesh Format |
| 161 |
.UMSHORTCUT File Extension |
UltraMon Data Format |
| 162 |
.UMV File Extension |
Are You Afraid Of The Dark? Video Data Format |
| 163 |
.UMX File Extension |
Deus Ex Format |
| 164 |
.UNA File Extension |
SIMS Unauthorized Data |
| 165 |
.UNAUTH File Extension |
SiteMinder Unauthorized Message Format |
| 166 |
.UNAVAILABLE File Extension |
Al-Namrood Ransomware Affected Format |
| 167 |
.UNCOMPRESSED_SIZE File Extension |
Singularity Game |
| 168 |
.UNF File Extension |
Btreive Unformatted |
| 169 |
.UNI File Extension |
MikMod UniMOD Module |
| 170 |
.UNIF File Extension |
Universal NES Image Format ROM Image Format |
| 171 |
.UNITXT File Extension |
YS FLIGHT Language |
| 172 |
.UNITY File Extension |
Unity Scene Format |
| 173 |
.UNITY3D File Extension |
Unity Web Player Format |
| 174 |
.UNITYPACKAGE File Extension |
Unity Package Format |
| 175 |
.UNITYPROJ File Extension |
Unity 3D Project |
| 176 |
.UNIT_VARIANT File Extension |
Total War Unit Variant Settings |
| 177 |
.UNIX File Extension |
Unix |
| 178 |
.UNK File Extension |
UVProbe Format |
| 179 |
.UNKNOWN File Extension |
Unknown Format Type |
| 180 |
.UNKNOWN_VIDEO File Extension |
Youtube API Video Information Format |
| 181 |
.UNL File Extension |
Garmin Unlock Format |
| 182 |
.UNQ File Extension |
ACT! 3.0 Email Message Attachment |
| 183 |
.UNR File Extension |
Unreal Level Map |
| 184 |
.UNREAL File Extension |
Unreal Tournament Link Format |
| 185 |
.UNRST File Extension |
OPM Data Format |
| 186 |
.UNS File Extension |
Visual Navigation Suite Export Or Import Settings |
| 187 |
.UNT File Extension |
AutoCAD Unit Definition Format |
| 188 |
.UNUSED File Extension |
Photoline 4 Defaults |
| 189 |
.UNV File Extension |
BusinessObjects Universe |
| 190 |
.UNX File Extension |
Unix Text Format |
| 191 |
.UOF File Extension |
Uniform Office Document |
| 192 |
.UOL File Extension |
PhotoImpact Clipart Image |
| 193 |
.UOP File Extension |
Uniform Office Presentation |
| 194 |
.UOS File Extension |
Uniform Office Spreadsheet |
| 195 |
.UOT File Extension |
Uniform Office Document |
| 196 |
.UPC File Extension |
Ultimate Paint Component |
| 197 |
.UPD File Extension |
Program Update Information |
| 198 |
.UPDATE File Extension |
ISAPI Update Format |
| 199 |
.UPDATR File Extension |
IConomy Update Format |
| 200 |
.UPDF File Extension |
UltraPdf Publication |
| 201 |
.UPF File Extension |
Nokia Phone Digital Photo Format |
| 202 |
.UPG File Extension |
Firmware Upgrade Format |
| 203 |
.UPI File Extension |
Ulead PhotoImpact Plugin |
| 204 |
.UPJ File Extension |
Ulead Project |
| 205 |
.UPK File Extension |
Unreal Engine 3 Package |
| 206 |
.UPK0 File Extension |
Metro 2033 Game |
| 207 |
.UPK1 File Extension |
Metro 2033 Game Data Format |
| 208 |
.UPKG File Extension |
Unreal Engine Package Flag Format |
| 209 |
.UPL File Extension |
StarMoney Agent Download |
| 210 |
.UPLUGIN File Extension |
Unreal Tournament Plugin Format |
| 211 |
.UPM File Extension |
PenMail |
| 212 |
.UPO File Extension |
DBASE Compiled Update Data |
| 213 |
.UPOI File Extension |
IGO Points Of Interest Format |
| 214 |
.UPP File Extension |
Ghostscript Uniprint Unified Printer Parameter |
| 215 |
.UPR File Extension |
FileMaker User Spelling Dictionary |
| 216 |
.UPROJECT File Extension |
Unreal Tournament Game Data Format |
| 217 |
.UPS File Extension |
Microsoft Works |
| 218 |
.UPX File Extension |
Ultimate Packer For EXecutables Format |
| 219 |
.UPZ File Extension |
StarMoney Agent Download |
| 220 |
.UQM File Extension |
The Ur-Quan Masters Game Data Format |
| 221 |
.URC File Extension |
Unicenter Remote Control |
| 222 |
.URD File Extension |
Ultra Recall Database |
| 223 |
.URD-JOURNAL File Extension |
Ultra Recall Journal Update |
| 224 |
.URF File Extension |
AppFace Skin |
| 225 |
.URL File Extension |
Internet Shortcut |
| 226 |
.URLS File Extension |
GetRight Internet Shortcuts List |
| 227 |
.URL_ File Extension |
Internet Shortcut - URL - Uniform Resource Locator |
| 228 |
.URN File Extension |
H3DAPI Uniform Resource Name Data Format |
| 229 |
.URP File Extension |
Universal Report |
| 230 |
.URQ File Extension |
Review QuickChart Chart |
| 231 |
.URR File Extension |
Uniface Signatures Format |
| 232 |
.URS File Extension |
ControlDraw User Requirement Specifier |
| 233 |
.URT File Extension |
Utah Raster Toolkit Format |
| 234 |
.US File Extension |
English Language Translation |
| 235 |
.US? File Extension |
Microsoft Word Font |
| 236 |
.USA File Extension |
Microsoft Office Headers Format |
| 237 |
.USB File Extension |
SiSoftware Sandra |
| 238 |
.USBLOG File Extension |
Usb Sniffer Log Format |
| 239 |
.USC File Extension |
USC Module Definition |
| 240 |
.USDX File Extension |
Tom Clancys Rainbow Six: Vegas Game Data Format |
| 241 |
.USDZ File Extension |
USDZ Augmented Reality Format Format |
| 242 |
.USECASEDIAGRAM File Extension |
Microsoft Visual Studio Use Case Diagram |
| 243 |
.USEQ File Extension |
USeq Genome Data Format |
| 244 |
.USER File Extension |
Visual Studio Project User Options Format |
| 245 |
.USERKIT File Extension |
DrumCore Audio Format |
| 246 |
.USERPROFILE File Extension |
Norton Antivirus User Profile Format |
| 247 |
.USERSETTINGS File Extension |
User Settings Format |
| 248 |
.USERTILE-MS File Extension |
Windows 8 User Tile Format |
| 249 |
.USF File Extension |
Nintendo 64 Music Format |
| 250 |
.USFLIB File Extension |
Nintendo 64 Song Library |
| 251 |
.USG File Extension |
PC-Doctor For Windows |
| 252 |
.USH File Extension |
Creston SIMPL Windows |
| 253 |
.USI File Extension |
UsiXML UI Description |
| 254 |
.USL File Extension |
ProWORX Nxt USL Loadable |
| 255 |
.USM File Extension |
USM Game Video Format |
| 256 |
.USP File Extension |
PageMaker Printer Font |
| 257 |
.USR File Extension |
FileMaker Pro Database Format |
| 258 |
.USS File Extension |
WinUAE Saved State |
| 259 |
.UST File Extension |
WiFi SiStr Exported User Theme Format |
| 260 |
.USTAR File Extension |
Uniform Standard Tape Archive Format |
| 261 |
.USV File Extension |
LG Xenon Mobile Phone Contact List Format |
| 262 |
.USX File Extension |
Unreal Static Meshes |
| 263 |
.USZ File Extension |
Stardock WindowBlinds SkinStudio Data Format |
| 264 |
.UT2 File Extension |
Unreal Tournament Map |
| 265 |
.UT2LINK File Extension |
Unreal Tournament 2004 Game Data Format |
| 266 |
.UT2MOD File Extension |
Unreal Tournament 2003/2004 Module Format |
| 267 |
.UT3 File Extension |
Unreal Tournament 3 Map Format |
| 268 |
.UT4MOD File Extension |
Unreal Tournament 2004 Module |
| 269 |
.UT8 File Extension |
Ghost Master Language Format |
| 270 |
.UTB File Extension |
µTBackup Backup |
| 271 |
.UTC File Extension |
Bioware Creature Format |
| 272 |
.UTD File Extension |
BioWare Aurora Game Engine Door |
| 273 |
.UTE File Extension |
BioWare Aurora Game Engine Encounter |
| 274 |
.UTF8 File Extension |
Unicode UTF8-Encoded Text Document |
| 275 |
.UTI File Extension |
Spybot - Search & Destroy Includes |
| 276 |
.UTL File Extension |
QuickBooks Data |
| 277 |
.UTM File Extension |
BioWare Aurora Game Engine Store |
| 278 |
.UTP File Extension |
BioWare Aurora Game Engine Placeable Object |
| 279 |
.UTPART File Extension |
µTorrent Unfinished Download |
| 280 |
.UTS File Extension |
Spybot - Search & Destroy Include |
| 281 |
.UTT File Extension |
BioWare Aurora Engine Trigger |
| 282 |
.UTW File Extension |
Unity Whirld Format |
| 283 |
.UTX File Extension |
Unreal Texture Package |
| 284 |
.UTXT File Extension |
Unicode Text Format |
| 285 |
.UTZ File Extension |
UIQ Theme Package |
| 286 |
.UU File Extension |
Uuencoded Format |
| 287 |
.UUD File Extension |
UUDecoded Format |
| 288 |
.UUE File Extension |
Uuencoded Format |
| 289 |
.UUM File Extension |
Minuum Keyboard Backup Format |
| 290 |
.UUS File Extension |
Ultra Utility Skin |
| 291 |
.UV2 File Extension |
µVision Project |
| 292 |
.UVCAB File Extension |
UVScreenCamera Films |
| 293 |
.UVF File Extension |
Uncertain Value Format |
| 294 |
.UVKBK File Extension |
Ultra Virus Killer Backup Information Format |
| 295 |
.UVKEY File Extension |
Ultra Virus Killer License Format |
| 296 |
.UVKSR File Extension |
Ultra Virus Killer System Repair Settings Format |
| 297 |
.UVN File Extension |
Yamaha Tyros Audio Format |
| 298 |
.UVNTS File Extension |
UVScreenCamera Notes |
| 299 |
.UVOPT File Extension |
µVision Project Options Format |
| 300 |
.UVOPTX File Extension |
µVision Configuration Format |
| 301 |
.UVPRJX File Extension |
µVision Project Format |
| 302 |
.UVPROJ File Extension |
µVision4 Project |
| 303 |
.UVPROJX File Extension |
µVision Project Format |
| 304 |
.UVR File Extension |
UVR Mesh |
| 305 |
.UVS File Extension |
UVScreenCamera Segments |
| 306 |
.UVSEG File Extension |
UVScreenCamera Segments |
| 307 |
.UVU File Extension |
Movie Maker Video Data Format |
| 308 |
.UVW File Extension |
3D Studio MAX UVW Coordinates |
| 309 |
.UVX File Extension |
Unreal Tournament 2003 Saved Game |
| 310 |
.UW File Extension |
Unsigned Word Audio Format |
| 311 |
.UWF File Extension |
UltraTracker Wave Format |
| 312 |
.UWL File Extension |
User Word List Format |
| 313 |
.UXDC File Extension |
Microsoft Excel Data Retrieval Service Connection |
| 314 |
.UXF File Extension |
UMLet UML EXchange Format |
| 315 |
.UXX File Extension |
Unreal Tournament Cache |
| 316 |
.UXY File Extension |
Barudan Embroidery Outline |
| 317 |
.UYVY File Extension |
YUV 16-bit Image Format |
| 318 |
.UZ2 File Extension |
Unreal Tournament Compressed |
| 319 |
.UZE File Extension |
UltimateZip Compressed Archive |
| 320 |
.UZED File Extension |
Family Tree Builder Compressed Unicode GEDCOM Data Format |
| 321 |
.UZIP File Extension |
FreeBSD Compressed Disk Image |
| 322 |
.UZY File Extension |
Backdoor.Sokacaps |