| ALGOL | ⊕ 1958 | ↓ ↑ ⊕ Numerical Scientific | True Algol58s | ⊕ International | ALGOrithmic Language |
| Algol 48 | ⊕ 1998 | ↓ ↑ ⊕ Numerical Scientific | True Algol58s | ⊕ United States | McCarthy's putative theorised Algol 50 precursor |
| ALGOL 58 | ⊕ 1958 | ↓ ↑ ⊕ Numerical Scientific | True Algol58s | ⊕ International | Algorithmic Language |
| BALGOL | ⊕ 1958 | ↓ ↑ ⊕ Numerical Scientific | True Algol58s | ⊕ United States | Burroughs Algorithmic Language |
| DIALGOL | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | True Algol58s | ⊕ United States | |
| IAL | ⊕ 1958 | ↓ ↑ ⊕ Numerical Scientific | True Algol58s | ⊕ International | International Algebraic Language |
| SLANG | ⊕ 1960 | ↓ ↑ ⊕ Multi-purpose | True Algol58s | ⊕ United States | Compiler compiler system |
| SPL | ⊕ 1970 | ↓ ↑ ⊕ Multi-purpose | True Algol58s | ⊕ United States | Space programming language |
| SUBALGOL | ⊕ 1960 | ↓ ↑ ⊕ Numerical Scientific | True Algol58s | ⊕ United States | Stanford extensions to BALGOL |