| AMPL | ⊕ 1994 | ↓ ↑ ⊕ Specialised Languages | ⊕ Matrix | ⊕ United States | Another Matrix Programming Language |
| K | ⊕ 1994 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Matrix | ⊕ United States | ASCII-based APL dialect |
| Mx | ⊕ 1994 | ↓ ↑ ⊕ On-Line | ⊕ Matrix | ⊕ United States | Interactive matrix algebra exploration language |