| AIMDS | ⊕ 1977 | ⊕ United States | |||
| CDL | ⊕ 1977 | ⊕ Russian Federation | Systems implementation language | ||
| COL | ⊕ 1977 | ⊕ United States | Communications Oriented Language | ||
| DIAL | ⊕ 1977 | ⊕ United States | |||
| Euclid | ⊕ 1977 | ⊕ Canada | Verifiable system software language | ||
| EXEC2 | ⊕ 1977 | ⊕ United States | |||
| FFP | ⊕ 1977 | ⊕ United States | Formal FP | ||
| FORTH 77 | ⊕ 1977 | ⊕ United States | |||
| GLIDE | ⊕ 1977 | ⊕ United States | |||
| ILL | ⊕ 1977 | ||||
| MAX | ⊕ 1977 | ⊕ United Kingdom | |||
| Modula-2 | ⊕ 1977 | ⊕ Switzerland | |||
| NNL2 | ⊕ 1977 | ⊕ United Kingdom | |||
| OBJ0 | ⊕ 1977 | ⊕ United States | |||
| One-man-language | ⊕ 1977 | ⊕ Canada | |||
| PROPLAN | ⊕ 1977 | ⊕ United Kingdom | |||
| RPL 11 B | ⊕ 1977 | ⊕ United Kingdom | Report preparation language | ||
| SBA | ⊕ 1977 | ⊕ United States | System for business automation | ||
| STOIC | ⊕ 1977 | ⊕ United States | |||
| ULP | ⊕ 1977 |