| CAFE | ⊕ 1974 | ⊕ United Kingdom | Job Control Language | ||
| Cesil | ⊕ 1974 | ⊕ United Kingdom | |||
| DECTAT | ⊕ 1974 | ↓ ↑ ⊕ Business Data Processing | ⊕ Decision tables | ⊕ United Kingdom | Decision table generator |
| GOLUX | ⊕ 1974 | ↓ ↑ ⊕ Specialised Languages | ⊕ United Kingdom | ||
| IMP 2 | ⊕ 1974 | ↓ ↑ ⊕ Multi-purpose | ⊕ Early Autocodes | ⊕ United Kingdom | |
| ISBL | ⊕ 1974 | ⊕ RDBMs | ⊕ United Kingdom | IBM Peterlee experimental relational algebra | |
| MAXIMOP | ⊕ 1974 | ⊕ United Kingdom | |||
| PIXIN | ⊕ 1974 | ⊕ United Kingdom | |||
| SOL | ⊕ 1974 | ⊕ Semantic | ⊕ United Kingdom | Semantic Operating Language | |
| TAB-360 | ⊕ 1974 | ⊕ Decision tables | ⊕ United Kingdom | ||
| TABLEMASTER | ⊕ 1974 | ⊕ United Kingdom | |||
| TABN | ⊕ 1974 | ⊕ United Kingdom | Decision table pogram | ||
| Van Emden and Kowalsi extended Prolog | ⊕ 1974 | ⊕ United Kingdom |