| ALGERNON | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| BACK | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ Germany | Frame language |
| BB1 | ⊕ 1987 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| CRL | ⊕ 1984 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | Frame language |
| CYCL | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | Frame language for CYC |
| Frames | ⊕ 1974 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | Minsky's pioneering FRL |
| FRL | ⊕ 1977 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | Frame Representation Language |
| FROBS | ⊕ 1986 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | OO frame language |
| GOLDWORKS | ⊕ 1985 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| HPRL | ⊕ 1982 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | KRL |
| JOSIE | ⊕ 1991 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| Kandor | ⊕ 1984 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| KAPPA | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | Frame language |
| KB | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| KEE | ⊕ 1984 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | IDE based frame language |
| KL-ONE | ⊕ 1977 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| KREME | ⊕ 1986 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | Frame language |
| LOOPS | ⊕ 1983 | ↓ ↑ ⊕ String and List Processing | Frame languages | ⊕ United States | Lisp Object-Oriented Programming System |
| MDS | ⊕ 1976 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | KR system |
| NETL | ⊕ 1979 | ↓ ↑ ⊕ Experimental and other | Frame languages | ⊕ United States | |
| NTF | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ Germany | |
| OPUS | ⊕ 1987 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| Ozone | ⊕ 1986 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ||
| PARKA | ⊕ 1989 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| PARMENIDES | ⊕ 1989 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| PHI | ⊕ 1979 | ↓ ↑ ⊕ String and List Processing | Frame languages | ⊕ United States | KBS |
| PRISM | ⊕ 1983 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | KR language used in machine learning |
| PROTEUS | ⊕ 1987 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| Quilian semantic network | ⊕ 1964 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | Original frames system |
| RHET | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| SNePS | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | |
| SRL | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | Schema Representation language |
| SRL/2 | ⊕ 1984 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | Schema language |
| THEO | ⊕ 1989 | ↓ ↑ ⊕ Specialised Languages | Frame languages | ⊕ United States | Learning frame language |
| UNIT Package | ⊕ 1979 | ↓ ↑ ⊕ String and List Processing | Frame languages | ⊕ United States | |
| UNITS | ⊕ 1977 | ↓ ↑ ⊕ Experimental and other | Frame languages | ⊕ United States | Frame language |