| ABC ALGOL | ⊕ 1973 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Netherlands | ALGOL 60 extension for symbolic math |
| DEFT | ⊕ 1973 | ↓ ↑ ⊕ Numerical Scientific | ⊕ FORTRAN IV standard | ⊕ Canada | Structured FORTRAN |
| MORTRAN | ⊕ 1973 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United States | Dialect of FORTRAN for structural programming |
| SPIFFY | ⊕ 1973 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United States | Structured FORTRAN IV from BOEING |