| COBLOC | ⊕ 1964 | ⊕ Difference Equations | ⊕ United States | Simulations program | |
| FORBLOC | ⊕ 1964 | ⊕ Difference Equations | ⊕ United States | Simulations language | |
| FORSIM | ⊕ 1964 | ⊕ Difference Equations | ⊕ United States | Fotran dialect for simulation | |
| Gargoyle | ⊕ 1964 | ⊕ W European algorithmic systems | ⊕ Norway | ||
| GENIUS | ⊕ 1964 | ⊕ W European algorithmic systems | ⊕ Sweden | ALGOL at SAAB | |
| HOI | ⊕ 1964 | ⊕ Germany | HYTRAN Operations Interpreter | ||
| HYPLOC | ⊕ 1964 | ⊕ Expression oriented | ⊕ United States | Simulations language | |
| LOGIK | ⊕ 1964 | ⊕ Digital | |||
| META 4 | ⊕ 1964 | ⊕ Grammar and Syntax-oriented | ⊕ United States | ||
| META III | ⊕ 1964 | ⊕ Grammar and Syntax-oriented | ⊕ United States | ||
| Metcalfe syntax language | ⊕ 1964 | ⊕ Grammar and Syntax-oriented | ⊕ United States | ||
| Metropolitan Honeywell Compromise Compiler | ⊕ 1964 | ⊕ COBOL coeval | ⊕ United States | ||
| OPS-1 | ⊕ 1964 | ⊕ Activity scanning | ⊕ United States | On-line Process Synthesizer | |
| OPSIM | ⊕ 1964 | ⊕ Activity scanning | ⊕ United States | ||
| OPTRAN | ⊕ 1964 | ⊕ Activity scanning | ⊕ United States | ||
| Solve | ⊕ 1964 | ⊕ United States | |||
| WALDO | ⊕ 1964 | ⊕ Numerical Control | ⊕ United States | ||
| XPOP | ⊕ 1964 | ⊕ Macroassemblers | ⊕ United States | Extensible macro assembly |