| 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 |