| 1:1 Assembler | ⊕ 1963 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Assembler for Telefile |
| ABL | ⊕ 1963 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ 2G Autocodes | ⊕ United Kingdom | Atlas Basic Language |
| Asset-assembler | ⊕ 1963 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Macros | ⊕ United States | |
| DAP | ⊕ 1963 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Assembler for CCC DDP 24 |
| MOSAIC | ⊕ 1963 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Macros | ⊕ United States | Macro system with advanced control structure |
| NABUR | ⊕ 1963 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | NAREC ASSEMBLER for the BURROUGHS D825 |
| OPAL | ⊕ 1963 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Philco symbolic assembler |
| SuperSoap | ⊕ 1963 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | Knuth's improved version of SOAP III |
| SYMBOLIC ASSEMBLER | ⊕ 1963 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States |