| Lincoln Reckoner | ⊕ 1965 | ↓ ↑ ⊕ On-Line | ⊕ Arithmetic | ⊕ United States | Interactive maths at Lincoln Labs |
| NAPSS | ⊕ 1965 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Arithmetic | ⊕ United States | Non-procedural language for solving mathematical problems |
| TOCS | ⊕ 1965 | ↓ ↑ ⊕ On-Line | ⊕ Arithmetic | ⊕ United States | TACT Online Computer System |