| C2 AML | ⊕ 1999 | ⊕ United States | |||
| CCC | ⊕ 1999 | ⊕ Japan | |||
| EDDI | ⊕ 1999 | ⊕ United Kingdom | |||
| Eden | ⊕ 1999 | ⊕ Japan | |||
| ETL | ⊕ 1999 | ||||
| Euler | ⊕ 1999 | Maths language | |||
| Formulate | ⊕ 1999 | ||||
| Hancock | ⊕ 1999 | ||||
| mJaba/LR | ⊕ 1999 | ⊕ Japan | |||
| Sonnet | ⊕ 1999 | ⊕ United States | |||
| Theseus | ⊕ 1999 | ⊕ Germany | |||
| ToonTalk 2 | ⊕ 1999 | ⊕ United States | |||
| UPC | ⊕ 1999 | ⊕ United States | Unified Parallel C | ||
| V-Promela | ⊕ 1999 | ⊕ United States | |||
| WAKABA | ⊕ 1999 | ⊕ Japan |