| ABS12 ALGOL | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United Kingdom | Algol 60 with process control extensions |
| Algol 1620 | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | Algol for the IBM 1620 |
| Algol 5 | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Denmark | RC Algol, first version |
| Algol 62 | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ France | Algol 60 for IBSYS |
| Duke ALGOL | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | Duke University ALGOL 60 |
| FACIT Algol | ⊕ 1962 | ↓ ↑ ⊕ Multi-purpose | ⊕ True ALGOL60s | ⊕ Norway | Algol for the FACIT |
| Formula ALGOL | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | ALGOL dialect for algebraic manipulation |
| GIER Algol II | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Denmark | 2nd version of the Gier algol |
| PALGO | ⊕ 1962 | ↓ ↑ ⊕ Multi-purpose | ⊕ True ALGOL60s | ⊕ Italy | Olivetti Algol 60 variant with lambda calculus |
| SCALP | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | Dartmouth small Algol system |
| SCATRAN | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | Ohio SU Algol |
| SDC String Algol | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | ALGOL with string extensions |
| Subset Algol 60 | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | WG 2.1 Simple Algol 60 dialect | |
| USS 90 Algol | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Italy | Algol for the USS 90 |