| APAR | ⊕ 1958 | ↓ ↑ ⊕ Excluded from Sammet | External systems control | ⊕ United States | System for scientific control |
| QUIN | ⊕ 1965 | ↓ ↑ ⊕ Specialised Languages | External systems control | ⊕ United States | Interactive system control language |
| Scanner | ⊕ 1963 | ↓ ↑ ⊕ Specialised Languages | External systems control | ⊕ United States | Knowlton |
| TREC | ⊕ 1964 | ↓ ↑ ⊕ Specialised Languages | External systems control | ⊕ United Kingdom | Interactive control system for reactors |