›

↑

↑

↑

Basic FORTRAN | ⊕ 1964 | ↓ ↑ ⊕ Numerical Scientific | FORTRAN IV standard | ⊕ United States | |

BTL Fortran | ⊕ 1967 | ↓ ↑ ⊕ Numerical Scientific | FORTRAN IV standard | ⊕ United States | Bell labs Fortran IV |

DEFT | ⊕ 1973 | ↓ ↑ ⊕ Numerical Scientific | FORTRAN IV standard | ⊕ Canada | Structured FORTRAN |

DELtran | ⊕ 1975 | ↓ ↑ ⊕ On-Line | FORTRAN IV standard | ⊕ United States | Fortran interpreted to DEL |

FORTRAN IV | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | FORTRAN IV standard | ⊕ United States | first major release of FORTRAN |

RC-Fortran | ⊕ 1968 | ↓ ↑ ⊕ Numerical Scientific | FORTRAN IV standard | ⊕ Denmark | Fortran for the RC 4000 |

WATFIV | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | FORTRAN IV standard | ⊕ Canada | Waterloo FORTRAN 2nd version |

WATFOR | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | FORTRAN IV standard | ⊕ Canada | WATerloo FORtran |