| STAR I | ⊕ 1959 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Burroughs 220 assembler |
| TAC | ⊕ 1959 | ↓ ↑ ⊕ Business Data Processing | ⊕ Symbolic assemblers | ⊕ United States | TRANSAC Assembler Compiler |
| TAP | ⊕ 1959 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | TRANSAC symbolic assembler |
| TASS | ⊕ 1959 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Tech Assembly System |