| ALEPH | ⊕ 1975 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ Netherlands | A Language Encouraging Program Hierarchy |
| DECAL | ⊕ 1960 | ↓ ↑ ⊕ Numerical Scientific | Other Algol 60s | ⊕ United States | DEC simplified Algol |
| DECAL-BBN | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | Other Algol 60s | ⊕ United States | DEC simplified Algol |
| DG/L | ⊕ 1973 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ United States | Data General Algol 60 |
| Glypnir | ⊕ 1966 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ United States | Parallel ALGOL |
| GOGOL | ⊕ 1961 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ United States | PDP-1 Algol 60 |
| GOGOL II | ⊕ 1962 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ United States | Time-sharing ALGOL-60 for PDP-1 |
| GOGOL III | ⊕ 1967 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ United States | Enhanced Algol 60 (strings and arrays) |
| GTL | ⊕ 1972 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ United States | Georgia Tech Algol |
| IMP72 | ⊕ 1972 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ United States | Extensible Algol |
| Mage | ⊕ 1967 | ↓ ↑ ⊕ Experimental and other | Other Algol 60s | ⊕ France | French Algol |
| SCRAP | ⊕ 1970 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ South Africa | |
| Sequence Break DECAL | ⊕ 1965 | ↓ ↑ ⊕ Numerical Scientific | Other Algol 60s | ⊕ United States | BBN version of DEC simplified Algol |
| Silver DECAL | ⊕ 1962 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ United States | DECAL with I/O |
| SL/8 | ⊕ 1970 | ↓ ↑ ⊕ Multi-purpose | Other Algol 60s | ⊕ United States | System Language for PDP-8 |