| ↔ Order by name | ↔ Order by year | ↔ Order by year reverse | ↔ Order by Type | ↔ Order by Sammet category |
| PALGO | ⊕ 1962 | ↓ ↑ ⊕ Multi-purpose | ⊕ True ALGOL60s | ⊕ Italy | Olivetti Algol 60 variant with lambda calculus |
| Trieste Algol | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Italy | Algol 60 with a 2-dimensional printing language |
| USS 90 Algol | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ Italy | Algol for the USS 90 |