| DOI | ⊕ 1952 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Initial orders | ⊕ United States | Wheeler |
| DOUGLAS | ⊕ 1952 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Douglas SM Macro-assembler |
| EDVAC/ORDVAC coding | ⊕ 1952 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | BRL Assembler library for the VAC computers |
| SO 2 | ⊕ 1952 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Symbolic assembler for IBM 701 |
| Turing autocode | ⊕ 1952 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United Kingdom | Turing |