| BIOSSIM | ⊕ 1978 | ↓ ↑ ⊕ String and List Processing | Process interaction | ⊕ United States | Biochemical simulations language |
| CAPS | ⊕ 1964 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United Kingdom | Precursor of CSL |
| CLAG | ⊕ 1973 | ↓ ↑ ⊕ On-Line | Process interaction | ⊕ Netherlands | Online simulation system |
| DEMOS | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United Kingdom | Extensions to Simula |
| DYNAMO II/F | ⊕ 1976 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United States | Dynamo II outputting Fortran IV |
| Flow Simulator | ⊕ 1963 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United States | RCA flow simulation language |
| GPSS 1100 | ⊕ 1971 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United States | GPSS for the UNIVAC 1100 |
| GPSS/H | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United States | Extended GPSS |
| GSP II | ⊕ 1962 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United Kingdom | General Simulation Program |
| Hocus Pocus | ⊕ 1971 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United Kingdom | Algol based simulation language |
| NELIAC Simulator | ⊕ 1963 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United States | Simulation extensions to NELIAC |
| OPS-3 | ⊕ 1965 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United States | On-line Process Synthesizer version 3 |
| SIMCOM | ⊕ 1959 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United States | Simulation compiler |
| SIMON | ⊕ 1963 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United Kingdom | Algol-based simulation language |
| SIMON II | ⊕ 1965 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United Kingdom | Algol-based simulation language |
| SIMULA | ⊕ 1962 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ Norway | SIMUlation LAnguage |
| SIMULA 67 | ⊕ 1967 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ Norway | Object-oriented simulation language |
| SOL | ⊕ 1964 | ↓ ↑ ⊕ Specialised Languages | Process interaction | ⊕ United States | Simulation Oriented Language |