| BC NELIAC | 1962 | Numerical Scientific | IAL Coeval | Canada | NELIAC at UBC |
| Perlis and Smith string command language | 1958 | String and List Processing | IAL Coeval | United States | |
| PK-MAD | 1960 | IAL Coeval | United States | Debugging MAD dialect | |
| RALPH | 1963 | IAL Coeval | United States | Multi-input MAD |