| Atlas Fortran V | ⊕ 1967 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United Kingdom | Atlas scientific Fortran dialect |
| CDC Fortran | ⊕ 1967 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United States | Advanced scientific Fortran by CDC |
| DITRAN | ⊕ 1967 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United States | Diagnostic FORTRAN |
| The Message System | ⊕ 1967 | ↓ ↑ ⊕ On-Line | ⊕ Non Standard FIV | ⊕ United States | Dialog-enabling extensions to FORTRAN |