| AGGIE | ⊕ 1971 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | FORTRAN II from TAMU |
| ALTAC | ⊕ 1959 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | Algorithms on TAC |
| ALTRAN | ⊕ 1965 | ↓ ↑ ⊕ Non-numerical Scientific | Fortran I-III Variants | ⊕ United States | Translator for ALTAC |
| Atlas Fortran | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United Kingdom | |
| AUTOMATH | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | FORTRAN for Honeywell computers |
| BRL FORTRAN | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | FORTRAN for the BRLESC II and III |
| BUGTRAN | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | Debugging dialect of FORTRAN II |
| Extended Fortran | ⊕ 1967 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | ICS Fortran II |
| FAST | ⊕ 1959 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | FORTRAN compiler |
| FASTRAN | ⊕ 1963 | ↓ ↑ ⊕ Multi-purpose | Fortran I-III Variants | ⊕ United States | Indiana FORTRAN |
| FLAT | ⊕ 1962 | ↓ ↑ ⊕ Multi-purpose | Fortran I-III Variants | ⊕ United States | Indiana load and go FORTRAN |
| FORDESK | ⊕ 1966 | ↓ ↑ ⊕ On-Line | Fortran I-III Variants | ⊕ Australia | Interactive FORTRAN II |
| FORGO | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | Learner FORTRAN |
| FORTRAN | ⊕ 1954 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | Backus et al high-level compiler |
| FORTRAN 63 | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | CDC Fortran with extensible arithmetic |
| FORTRAN V | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | Interim FORTRAN with string and character handling |
| GOTRAN | ⊕ 1960 | ↓ ↑ ⊕ Multi-purpose | Fortran I-III Variants | ⊕ United States | Load-and-go FORTRAN |
| HARTRAN | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United Kingdom | Harwell FORTRAN |
| LARC Scientific Compiler | ⊕ 1960 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | Fortran for the LARC |
| Orion FORTRAN | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United Kingdom | Rutherford Labs FORTRAN |
| PDQ FORTRAN | ⊕ 1965 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | Purdue FORTRAN compiler |
| S1 | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United Kingdom | Harwell FORTRAN II |
| S3 Fortran | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United Kingdom | Stretch Fortran |
| SIFT | ⊕ 1962 | ↓ ↑ ⊕ Specialised Languages | Fortran I-III Variants | ⊕ United States | Fortran->Fortran translator |
| T3 Fortran | ⊕ 1965 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United Kingdom | Titan Fortran III |
| UK FORTRAN | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United Kingdom | |
| XTRAN | ⊕ 1958 | ↓ ↑ ⊕ Numerical Scientific | Fortran I-III Variants | ⊕ United States | Interactive extensible dialect of FORTRAN |