| ALICS | ⊕ 1965 | ↓ ↑ ⊕ Experimental and other | ⊕ Symbolic assemblers | ⊕ United States | ICS assembler |
| Anderson extensions | ⊕ 1965 | ↓ ↑ ⊕ Experimental and other | ⊕ Other US historic | ⊕ United States | Parallel extensions set for PLs |
| IVSYS | ⊕ 1965 | ↓ ↑ ⊕ Experimental and other | ⊕ Array | ⊕ United States | Early implementation of APL |
| PANON-1B | ⊕ 1965 | ↓ ↑ ⊕ Experimental and other | ⊕ Patterns | ⊕ Italy | Pattern-directed symbol manipulation language |
| SNAP | ⊕ 1965 | ↓ ↑ ⊕ Experimental and other | ⊕ Macros | ⊕ United Kingdom |