| ALGOL D | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | Hypothetical family of syntax-extended Algol 60s |
| BESM-Algol | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Russian Federation | Algol for the BESM system |
| COMTRAN | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ External systems testing | ⊕ United States | Communications Computer Language |
| EXATRAN | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Algebraic | ⊕ United States | NASA maths language |
| MACSYMA | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Algebraic | ⊕ United States | Symbolic math system |
| Revised ALGOL 60 | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ International | ALGOL 60 dialect |
| SFD-ALGOL | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | |
| THE BRAIN | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Arithmetic | ⊕ United States | |
| Trieste Algol | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Italy | Algol 60 with a 2-dimensional printing language |
| UHELP | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Optimisation and LP | ⊕ United States | Linear programing language |
| WATFIV | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ FORTRAN IV standard | ⊕ Canada | Waterloo FORTRAN 2nd version |