| DART | 1959 | Numerical Scientific | Strict Early Fortrans | United States | Simplified FORTRAN + brackets |
| FORTRAN II | 1958 | Numerical Scientific | Strict Early Fortrans | United States | FORTRAN v2 |
| FORTRAN III | 1958 | Numerical Scientific | Strict Early Fortrans | United States | Interim Fortran |
| MORTRAN | 1958 | Strict Early Fortrans | United States | JOHNNIAC interpreter | |
| PAF | 1957 | On-Line | Strict Early Fortrans | France | Conversational programming language |