| ACTRAN | 1970 | Specialised Languages | Hybrid | Germany | Hybrid simulation language |
| CLASS | 1970 | Specialised Languages | Hybrid | United States | |
| DISCO | 1981 | Specialised Languages | Hybrid | Denmark | Simulation language |
| GASP IV | 1973 | Specialised Languages | Hybrid | United States | General Activity Simulation Program |
| GASP-PL/I | 1977 | Specialised Languages | Hybrid | United States | GASP in PL/I |
| MERMAID | 1968 | Hybrid | United States | ||
| PROSE | 1975 | Specialised Languages | Hybrid | United States | Hybrid simulation language |
| SLAM | 1976 | Hybrid | United States | Simulation Language for Alternative Modeling | |
| SLAM II | 1980 | Specialised Languages | Hybrid | United States | Extension of SLAM |
| SVDS | 1970 | Hybrid | United States | Hybrid space simulation language |