| CIEL | 1988 | France | |||
| CO2 | 1988 | Business Data Processing | France | Object-oriented database language | |
| DeBuMa | 1988 | France | |||
| O2 | 1988 | France | Object-oriented database language | ||
| RDL1 | 1988 | Specialised Languages | RETE and production | France | |
| SCOOP | 1988 | Specialised Languages | Horn clause | France |