| CONVERT | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ List | ⊕ United States | String processing language hybrid of COMIT and LISP |
| FLIP | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ List | ⊕ United States | Format List Processor |
| LECOM | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ List | ⊕ United States | LeHigh COMIT |
| REFCO III | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ List | ⊕ United States | Reference counting list processing system |
| SLP | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ List | ⊕ United Kingdom | simple list processing |