| McClure simulation language | ⊕ 1964 | ↓ ↑ ⊕ Specialised Languages | ⊕ Digital | ⊕ United States | TI digtal language |
| PACTOLUS | ⊕ 1964 | ↓ ↑ ⊕ Specialised Languages | ⊕ Digital | ⊕ United States | Digital simulation language |
| UNISIM | ⊕ 1964 | ↓ ↑ ⊕ Specialised Languages | ⊕ Digital | ⊕ United States | Network simulation language |