| ABC | ⊕ 1989 | ↓ ↑ ⊕ Experimental and other | ⊕ Graph | ⊕ Netherlands | Intermediate language ABC abstract machine |
| ASF | ⊕ 1989 | ↓ ↑ ⊕ Specialised Languages | ⊕ Netherlands | Algebraic Specification Formalism | |
| Booster | ⊕ 1989 | ⊕ Netherlands | |||
| Concurrent Clean | ⊕ 1989 | ⊕ Netherlands | |||
| DFC | ⊕ 1989 | ↓ ↑ ⊕ Specialised Languages | ⊕ Netherlands | Dataflow language for supercomputers | |
| FORM | ⊕ 1989 | ⊕ Netherlands | |||
| SDF | ⊕ 1989 | ⊕ Netherlands | Syntax Definition Formalism |