| GASPPI | ⊕ 1976 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Process interaction GASP |
| GERT III-Z | ⊕ 1976 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Graphical simulation system |
| SIMFO | ⊕ 1976 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | COBOL inspired simulation language |