| ALCOR | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ International | ALCOR-Gruppe ALGOL |
| ALPHA | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Russian Federation | Russian rich maths extension of Algol 60 |
| BETA | ⊕ 1961 | ↓ ↑ ⊕ String and List Processing | ⊕ True ALGOL60s | ⊕ Russian Federation | Russian List processing ALGOL |
| Case ALGOL | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | ALGOL 60 from Case |
| DASK Algol | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Denmark | Danish ALGOL |
| GENIE | ⊕ 1961 | ↓ ↑ ⊕ Multi-purpose | ⊕ True ALGOL60s | ⊕ United States | Algorithmic language for the Rice R1 |
| Oak Ridge ALGOL compiler | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | Algol compiler for CDC 1604 |
| SMALGOL | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | |
| SMALGOL-61 | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | |
| X1 Algol 60 | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Netherlands |