| ↔ Order by name | ↔ Order by year | ↔ Order by year reverse | ↔ Order by Type | ↔ Order by Sammet category |
| ACT | ⊕ 1966 | ↓ ↑ ⊕ Experimental and other | ⊕ State transition tables | ⊕ United Kingdom | Automated Contingency Translator |
| Day state transitions | ⊕ 1970 | ↓ ↑ ⊕ Specialised Languages | ⊕ State transition tables | ⊕ United Kingdom | Transistion table system |