| Alphard | ⊕ 1974 | ↓ ↑ ⊕ Experimental and other | ⊕ Pascals | ⊕ United States | Pascal with data abstraction |
| DDN | ⊕ 1974 | ↓ ↑ ⊕ Experimental and other | ⊕ Single-assignment | ⊕ United States | Data-Driven Nets |
| NODAL | ⊕ 1974 | ↓ ↑ ⊕ Experimental and other | ⊕ Generation of JOSS I | ⊕ Switzerland | High level declarative language for physics research |
| PACOL | ⊕ 1974 | ↓ ↑ ⊕ Experimental and other | ⊕ Israel | Language to control programming components | |
| PL/CS | ⊕ 1974 | ↓ ↑ ⊕ Experimental and other | ⊕ Other PL/Is | ⊕ United States | PL/I subdialect for the CPS |