| ANSIR | ⊕ 1968 | ↓ ↑ ⊕ Specialised Languages | External systems testing | ⊕ France | Language for patching and checking analog and hybrid computers |
| ATLAS | ⊕ 1968 | ↓ ↑ ⊕ Specialised Languages | External systems testing | ⊕ United States | Avionics test language |
| ATLAS | ⊕ 1969 | ↓ ↑ ⊕ Specialised Languages | External systems testing | ⊕ United States | AEEC initial version of ATLAS avionics test language |
| ATOLL | ⊕ 1965 | ↓ ↑ ⊕ Specialised Languages | External systems testing | ⊕ United States | NASA Test language |
| COMSITE | ⊕ 1969 | ↓ ↑ ⊕ Specialised Languages | External systems testing | ⊕ United States | language for SITE testing devices |
| COMTRAN | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | External systems testing | ⊕ United States | Communications Computer Language |
| CTL | ⊕ 1968 | ↓ ↑ ⊕ Specialised Languages | External systems testing | ⊕ United States | Testing language |
| ELP | ⊕ 1971 | ↓ ↑ ⊕ Specialised Languages | External systems testing | ⊕ United States | English language avionics testing |
| STROBES | ⊕ 1965 | ↓ ↑ ⊕ Specialised Languages | External systems testing | ⊕ United States | |
| Wright | ↓ ↑ ⊕ Specialised Languages | External systems testing | ⊕ United States |