| Abbreviation | Definition |
|---|---|
| TBB | RITLABS The Bat! E-mail Hives |
| TBC | Tool Bar Customization |
| TBF | TurboFax Fax format file |
| TBK | Asymetrix ToolBook file |
| TBK | dBASE IV Memo backup file |
| TBL | Dynamic Link library |
| TBL | Table |
| TBR | Custom ToolBaR |
| TBS | German MicroSoft Word TextBauSteine Text elements file |
| TBX | Project Scheduler 4 Table |
| TBX | Title Box Definition File |
| TBZ | Bzip file |
| TC | Termcap |
| TC | Turbo C Configuration file |
| TCH | Turbo C Help file |
| TCL | Tool Command Language script source code |
| TCO | T9000 object modules |
| TCTSE | Terminal Control Table System Entry |
| TCW | TurboCAD for Windows Drawing |
| TD | Turbo Debugger for DOS Configuration file |