| szs | Nintendo Switch Game Archive |
| t4 | Top 4 Compressed Data |
| t7z | Littleutils To-7Zip Recompressed Archive |
| tar | Tape Archive |
| taraa | Tape Archive Split Archive |
| tardist | IRIX TAR Distribution Archive |
| targz | Unix Gzipped TAR Archive |
| taz | Unix Gzipped TAR Archive |
| tbk | The Bat! Backup Archive |
| tbz | Bzip Compressed Tape Archive |
| tbz2 | Bzip2 Compressed Tape Archive |
| tce | Tiny Core Linux Extension |
| tck | BMISuite BMIScan Compressed Archive |
| tdr | ArVid Tape Backup |
| tgz | Drobo Application Package |
| Unix Gzipped TAR Archive |
| thr | THOR Compressed Data |
| tibkp | Titanium Backup Data |
| tibx | Acronis Backup v12 Archive |
| tini | Chrome OS Crostini Backup |
| tkz | TeKton3D Project Archive |
| tmf | TiVo Video Recording Archive |
| to4 | Top 4 Compressed Data |
| toppkg | TopSolid Package |
| tpafz | YouMinds Composer Portable Archive |
| tpf | TexMod Package File |
| tpk | Tizen Application Package |
| tpkg | tpkg-builder data |
| tpxz | Pixz Compressed Tarball |
| ts3_iconpack | TeamSpeak 3 Icon Package |
| tsb | Trabalph Software Program Compressed Data |
| tsep | Tekla Structures Extension Package |
| ttpkg | TomTom Package |
| txz | XZ Compressed Tar Archive |
| tz | Compressed Tape Archive |
| tzb | TAR.Z.btoa Compressed Archive |
| tzip | Tzip Compressed Text |
| tzp | TrueZIP Ecnrypted JAR Archive |
| tzr | ANSYS IcePak Project Package |
| tzst | Zstandard Compressed TAR Archive |
| tzx | Unraid OS Application Package |
| uar | Uniface Deployment Archive |
| uas | PhotoImpact Backup Archive |
| uc2 | UltraCompressor 2 Compressed Archive |
| ucas | Unreal Engine 4 Archive |
| uea | Protector Suite QL Encrypted Archive |
| ueed | Uconomix Encryption Engine Encrypted Directory |
| ueef | Uconomix Encryption Engine Encrypted File |
| uexp | UE Viewer Package |
| ufa | UFA Compressed Archive |
| uha | UHarc Archive |
| uharc | UHarc Archive |
| ums | Dragon UnPACKer 5 Archive |
| upg | InCenter NetWall Node Upgrade Package |
| upx | UPX Compressed File |
| ustar | Tape Archive |
| uti | PrivateCrypto Encrypted Archive |
| utoc | Unreal Engine 4 Archive Metadata |
| uws | UniTrader 2006 Website Archive |
| uwt | UniTrader Website Template Archive |
| uze | UltimateZip Compressed Archive |
| uzip | FreeBSD Compressed Disk Image |
| vad | Virtuoso Application Distribution Package |
| varc | Havok Vision Engine Archive |
| vbk | Veeam Full Backup Archive |
| vbm | Veeam Backup Metadata File |
| vcab | VidyoConnect Log Archive |
| vcb | VMware Consolidated Backup Archive |
| vcn | Vacon NCDrive Package |
| vdf | Valve Steam Data File |
| vem | Micro Vault Virtual Expander File |
| vfs2 | NUVICO EasyNet Backup Data |
| vfs3 | NUVICO EasyNet Backup Data |
| vfs4 | NUVICO EasyNet Backup Data |
| vhb | Renee Becca Backup Archive |
| via | Viz Artist v3 Archive |
| vib | Veeam Incremental Backup Archive |
| VMware vSphere Installation Bundle Package |
| vip | LabVIEW Virtual Instrument Package |
| vmarc | z/VM Archive |
