| GERTS III | ⊕ 1970 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Graphical simulation system |
| GERTS III C | ⊕ 1970 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Graphical simulation system |
| GERTS III Q | ⊕ 1970 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Graphical simulation system |
| GERTS III R | ⊕ 1970 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Graphical simulation system |
| GPSS V | ⊕ 1970 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | |
| LINDA | ⊕ 1970 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Computer simulation language for LSI hardware |
| MODEL | ⊕ 1970 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Computer simulation language for LSI hardware |
| SIMSCRIPT II Plus | ⊕ 1970 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Simulations language |