| ADLIB | ⊕ 1980 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | Superset of PASCAL with concurrency |
| APDL | ⊕ 1969 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | Algorithmic Processor Description Language |
| CDL | ⊕ 1965 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | Computer Design Language |
| CDL 1 | ⊕ 1970 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | Computer Definition Language |
| CDL/370/155 | ⊕ 1976 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | |
| CDLM | ⊕ 1981 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ Germany | |
| DCDL | ⊕ 1969 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | Computer simulation system |
| DDL | ⊕ 1968 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | Digital Design Language |
| DSL/90 | ⊕ 1965 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | Computer simulation language |
| ISP | ⊕ 1971 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | |
| ISPL | ⊕ 1971 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | Instruction Set Processor Language |
| ISPS | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | Digital | ⊕ United States | Operational hardware specification language |
| 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 |