| ACOS | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | BBS language | |
| AMLOG | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Japan | Equational logic programming language | |
| Andorra | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Japan | Hybrid of Parlog and Aurora | |
| ARLA | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Robotics | ⊕ United States | ABBA robotics language |
| AUTOLEV | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Modelling | ⊕ United States | Mechanical systems language |
| BACK | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Frame languages | ⊕ Germany | Frame language |
| BER | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ United Kingdom | Basic Encoding Rules | |
| C5 | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ United States | C based version of OPS-5 |
| Coherent Parallel C | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | ||
| CYCL | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Frame languages | ⊕ United States | Frame language for CYC |
| DFORMAT | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Language for depicting data structures | |
| DRAG | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | PIC preprocessor language for directed graphs | |
| EusLisp | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Lazy Evaluation LISPs | ⊕ Japan | geometric modeler in Lisp for Robotics and CAD |
| FORGE | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ CAI languages | ⊕ United States | Computer aided instruction language |
| G | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Animation | ⊕ United States | Runtime graphics language for GRASP |
| GDL | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Germany | ||
| KL1 | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Japan | Kernel Language 1 | |
| MC-OBJ | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Italy | Interpreter for OBJ | |
| METAL | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | BBS scripting language | |
| MIKE | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Algebraic | ⊕ Belgium | Algebraic Modula 2 |
| Mizar | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Poland | ||
| MOA | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | parallel language | |
| Modula-3 | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ OO C family | ⊕ International | OO language with genericity and prototyping |
| NAPIER 88 | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ United Kingdom | ||
| OPSJ | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ United States | Production system |
| PDL | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Japan | Process Description Language | |
| PIE | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Visual language | |
| RDL1 | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ France | |
| SAD | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Japan | Scripting language for the SAD facility at KEK | |
| SCOOP | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Horn clause | ⊕ France | |
| SDL | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ International | Specification and Description Language | |
| SUPERB | ⊕ 1988 | ↓ ↑ ⊕ Specialised Languages | ⊕ Switzerland | Parallel FORTRAN |