All pages

UCS-2	UCS-4	UCS2
UCSD p-System Filesystem	UCSD p-system p-code	UDF
UDS : Unlimited Drive Storage	UFA	UFS
UFS2	UGF	UHARC
UHBC	UHIC	UHS
ULID	UML	UNIVAC 90-column card
UNIX Plot Format	UNV	UOF
UPC	UPC-A	UPC-E
UPF	UPS (binary patch format)	UPX
UPX/TPX (Photo Express)	URI	URL
URL encoding	URL shorteners	URN
USB	USDZ	USF
USM	UTF-1	UTF-16
UTF-18	UTF-32	UTF-7
UTF-8	UTF-9	UTF-EBCDIC
UTF16	UTF8	UTI
UUID	Ufsdump	Ugoira
UltraCode	UltraCompressor II	UltraEdit project file
UltraEdit wordfile	UltraStar Karaoke	Ultra Tracker
Umatic HB	Unar	Unicode
Unicode Steganography (unisteg)	Unified Emulator Format	Unified diff
Uniform Type Identifier	Unirast	UnisCode
Unity package file	Universal Disk Format	Universal Machine (ICFP programming contest 2006)
Universal Scene Description	Unix	Unix dump
Unix time	Unsigned char	Unum
Updateable Subspace Key (Freenet)	Updateable Subspace Keys (Freenet)	Ut Video
Utah RLE	Utf-8	Uuencoding
Uxn program file	V-Ray	V.Flash PTX
V2000	VAG (PlayStation)	VAXL
VBM (VDC BitMap)	VBScript	VB (Resident Evil 1997)
VC-1	VC6	VCDIFF
VCF	VCalendar	VCard
VDAFS	VDEO	VDI
VDR (VirtualDub)	VEGX	VEM
VFAT	VFD (Virtual Floppy Disk)	VGAPaint 386 Animation
VGAPaint 386 COM Program	VGAPaint 386 PCX Self-Extracting Picture	VHD (Virtual Hard Disk)
VHS	VHS-C	VICAR
VICE	VIFF	VIP
VIPS	VISCII	VITec
VIV	VLC	VLM
VMDK	VML	VMUFAT
VMWare Workstation	VOB	VORT art scene
VORT file	VOTable	VOX
VO (Vector Object Utils)	VP8