| Armani | ⊕ 1999 | ⊕ United States | |||
| C# | ⊕ 1999 | ↓ ↑ ⊕ Multi-purpose | ⊕ OO C family | ⊕ United States | Simple portable systems language |
| C2 AML | ⊕ 1999 | ⊕ United States | |||
| Caché ObjectScript | ⊕ 1999 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | Scripting language for Caché 5 database systems | |
| CINT | ⊕ 1999 | ↓ ↑ ⊕ On-Line | ⊕ United States | C/C++ Interpreter | |
| Cymbal | ⊕ 1999 | ⊕ United States | Database language | ||
| DESL | ⊕ 1999 | ⊕ United States | |||
| EDEN | ⊕ 1999 | ⊕ United States | |||
| FROB | ⊕ 1999 | ↓ ↑ ⊕ Specialised Languages | ⊕ Robotics | ⊕ United States | FRP dialect featuring robotic control |
| Functional Developer | ⊕ 1999 | ⊕ United States | |||
| FUNKY | ⊕ 1999 | ⊕ United States | Robotics Language | ||
| FVision | ⊕ 1999 | ⊕ United States | |||
| GED | ⊕ 1999 | ⊕ United States | |||
| IDOL | ⊕ 1999 | ⊕ United States | Object-oriented extension to ICON | ||
| LaSt | ⊕ 1999 | ↓ ↑ ⊕ String and List Processing | ⊕ Description languages | ⊕ United States | |
| NetBasic | ⊕ 1999 | ⊕ United States | |||
| NetLogo | ⊕ 1999 | ⊕ United States | |||
| OCL | ⊕ 1999 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Object Constraint Language | |
| ONTOS | ⊕ 1999 | ⊕ United States | |||
| OPML | ⊕ 1999 | ⊕ United States | Outlining structure language | ||
| SAL | ⊕ 1999 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | for Spatial Aggregation Language | |
| Sassy | ⊕ 1999 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Parallel dialect of C | |
| Sonnet | ⊕ 1999 | ⊕ United States | |||
| Spring | ⊕ 1999 | ⊕ United States | |||
| ToonTalk 2 | ⊕ 1999 | ⊕ United States | |||
| UPC | ⊕ 1999 | ⊕ United States | Unified Parallel C | ||
| Vision:Report | ⊕ 1999 | ⊕ United States | |||
| V-Promela | ⊕ 1999 | ⊕ United States |