| tpm | PTC Creo Tool Parameter Data |
| tpn | Agilent N9342C Task Plan Data |
| tpq | TPWINLOG QSO Log |
| tpr | GROMACS Portable Binary Input File |
| tps | Clarion TopSpeed Database |
| tps | RFM Total Internal Partition Sums File |
| tpsdb | Print Shop Database |
| tpsml | PSML Page Template |
| tpt | PCLTool Transformation Parameter Table |
| tpzu | Treepad Icon Library Update |
| tp_meta | ThumbsPlus Metadata |
| tp_print | ThumbsPlus Print Scheme |
| tp_webwiz | ThumbsPlus Web Scheme Data |
| tq | STK Torque File |
| tq5 | TQSL Certificate Request Data |
| tq6 | TQSL Certificate Data |
| tq8 | TQSL Signed Certificate Data |
| tqc | TqcRunas Document |
| tqd | Torq DJ Song Information Data |
| tqf | IBM Rational Test RealTime Intermediate Data |
| tqi | Parasoft Insure++ Interface Data |
| tql | Microsoft SQL Server Query Analyser Header |
| tqq | Ten Quick Questions Data |
| tqr | EROS B Metadata |
| tqs | Parasoft Insure++ Data |
| tqsl | TQSL Log |
| tqx | NZ Infoshare Table Query File |
| tqz | TurningPoint QuestionPoint Data File |
| tr | CIRS Transaction Data |
| tr0 | SPICE Transient Analysis Output Data |
| tr1 | IBM VoiceType Data File |
| tr1 | SPICE Transient Analysis Output Data |
| tr2 | SPICE Transient Analysis Output Data |
| tr3 | SPICE Transient Analysis Output Data |
| tr4 | SPICE Transient Analysis Output Data |