| CAMAL | ⊕ 1968 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Algebraic | ⊕ United Kingdom | CAMbridge ALgebra system |
| GAMMA | ⊕ 1968 | ↓ ↑ ⊕ On-Line | ⊕ Algebraic | ⊕ Switzerland | CERN port of Culler-Fried System |
| IAM | ⊕ 1968 | ↓ ↑ ⊕ Non-numerical Scientific | ⊕ Algebraic | ⊕ United States | Interactive Algebraic Manipulation |