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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 |