| AED-0 | ⊕ 1964 | ↓ ↑ ⊕ Multi-purpose | ⊕ Gestalt programming | ⊕ United States | Enhanced AED for graphics |
| Atlas Autocode | ⊕ 1964 | ↓ ↑ ⊕ Multi-purpose | ⊕ Early Autocodes | ⊕ United Kingdom | Algol-like high-level Autocode |
| EMA | ⊕ 1964 | ↓ ↑ ⊕ Multi-purpose | ⊕ Early Autocodes | ⊕ United Kingdom | Extended Mercury Autocode |
| K AUTOCODE | ⊕ 1964 | ↓ ↑ ⊕ Multi-purpose | ⊕ Early Autocodes | ⊕ United Kingdom | ADvance autocode for KDF9 |
| MPPL | ⊕ 1964 | ↓ ↑ ⊕ Multi-purpose | ⊕ IBM PL/Is | ⊕ United States | Interim name for PL/I |
| PL/I | ⊕ 1964 | ↓ ↑ ⊕ Multi-purpose | ⊕ IBM PL/Is | ⊕ United States | Programming Language One |
| PL/I Subset G | ⊕ 1964 | ↓ ↑ ⊕ Multi-purpose | ⊕ IBM PL/Is | ⊕ United States | General Purpose PL/I subset |
| PLUS | ⊕ 1964 | ↓ ↑ ⊕ Multi-purpose | ⊕ Other US historic | ⊕ United States | Programming Language for UNIVAC Systems |