| CDLM | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Digital | ⊕ Germany | |
| CHI | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Description languages | ⊕ United States | Logic-based system for transformations |
| DISCO | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Hybrid | ⊕ Denmark | Simulation language |
| DISPEL | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Run-Time Debugging Language | |
| FLAN | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Vector | ⊕ United States | Vector processing language |
| GIRL | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Graphical input language |
| HDDL | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Netherlands | Philips dialogue definition language | |
| Karlsruhe AL | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Germany | Karlsruhe version of AL | |
| KBS | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Frames-based simulation language |
| OPS6 | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ United States | Production system |
| PDL/Ada | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Program design language based on Ada | |
| ROBEX | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Robotics | ⊕ Germany | Robotics dialect of EXAPT |
| ROSIE | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | English-based AI language | |
| SMP | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Arithmetic | ⊕ United States | |
| SRL | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Frame languages | ⊕ United States | Schema Representation language |
| TESI | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | APL for Pictorial Analysis | |
| V | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | ⊕ Definition languages | ⊕ United States |