| A# | ⊕ 1990 | ⊕ Algebraic | ⊕ Japan | Algebraic programming language | |
| ACORN | ⊕ 1990 | ||||
| ANDOR | ⊕ 1990 | ⊕ Horn clause | ⊕ Japan | AND-OR Prolog | |
| BABEL | ⊕ 1990 | ⊕ Portugal | |||
| BMF | ⊕ 1990 | ⊕ United Kingdom | |||
| C-Flavors | ⊕ 1990 | ⊕ United States | Scheme dialect with OO extensions and coroutines | ||
| CHARM | ⊕ 1990 | ⊕ United Kingdom | |||
| COB | ⊕ 1990 | ⊕ Japan | C Objects | ||
| DATALOG | ⊕ 1990 | ⊕ Italy | |||
| DIAL/M | ⊕ 1990 | ⊕ Japan | |||
| DinnerBell | ⊕ 1990 | ||||
| FORMS/3 | ⊕ 1990 | ⊕ United States | |||
| FP | ⊕ 1990 | Vector port of FP | |||
| GENTRAN 90 | ⊕ 1990 | ⊕ United States | Reduce-to-FOTRAN 90 translator | ||
| Glue | ⊕ 1990 | ⊕ United States | |||
| Haskell | ⊕ 1990 | ⊕ International | |||
| Iconicode | ⊕ 1990 | ⊕ United States | |||
| Id | ⊕ 1990 | ⊕ United States | |||
| Kali | ⊕ 1990 | ⊕ United States | |||
| L.0 | ⊕ 1990 | ⊕ United States | |||
| LEGEND | ⊕ 1990 | ⊕ United States | |||
| LIDEX | ⊕ 1990 | ⊕ Brazil | System development environment with teaching features | ||
| LORAM | ⊕ 1990 | ⊕ United States | |||
| MeldC | ⊕ 1990 | ⊕ United States | |||
| MetaQuotes Language | ⊕ 1990 | ⊕ United States | Stock trading lagnuage | ||
| MODCAL | ⊕ 1990 | ⊕ United States | Systems version of HP-PASCAL | ||
| NCL | ⊕ 1990 | ⊕ United States | |||
| OBSERV | ⊕ 1990 | ⊕ Israel | |||
| OSQL | ⊕ 1990 | ⊕ United States | Object-oriented Structured Query Language | ||
| PL/R | ⊕ 1990 | ⊕ Japan | |||
| ProLOOP | ⊕ 1990 | ⊕ United States | |||
| ProSet | ⊕ 1990 | ⊕ Germany | |||
| QBD | ⊕ 1990 | ||||
| rc | ⊕ 1990 | ⊕ United States | Plan 9 shell | ||
| SAL | ⊕ 1990 | SemWare Application Language | |||
| Scheme-Linda | ⊕ 1990 | ⊕ United Kingdom | |||
| School | ⊕ 1990 | ⊕ Brazil | |||
| SEL | ⊕ 1990 | ⊕ France | |||
| SETL2 | ⊕ 1990 | ⊕ United States | |||
| SIMAN IV | ⊕ 1990 | ⊕ United States | |||
| Solve | ⊕ 1990 | ||||
| SP | ⊕ 1990 | ⊕ United States | |||
| TELOS | ⊕ 1990 | ⊕ United Kingdom | |||
| TF | ⊕ 1990 | ⊕ Germany | |||
| Verdi | ⊕ 1990 | ⊕ Canada |