| APL | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Set | ⊕ United States | Set-based list-processing language |
| ASP-7 | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Map/Dictionary | ⊕ United Kingdom | ASP for the PDP-7 |
| ATLAS LISP | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United Kingdom | LISP 1.5 for the ATLAS |
| 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 |
| MACLISP | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| POP-1 | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Stack | ⊕ United Kingdom | |
| QUILL | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Text analysis | ⊕ Canada | |
| 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 |
| TEXTPAC | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Substrings | ⊕ United States | Text handling language |
| UMIST | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Macros | ⊕ United States | Michigan TRAC |