| A+ | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | Dialect of APL used at Morgan-Stanley |
| AAIMS | ⊕ 1979 | ↓ ↑ ⊕ Business Data Processing | Array | ⊕ United States | Array-based querying system |
| ADA | ⊕ 1969 | ↓ ↑ ⊕ Experimental and other | Array | ⊕ United States | Aiken |
| AIDA | ⊕ 1986 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | Functional variation on APL |
| ALICE | ⊕ 1980 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ Canada | Typed APL |
| AMPL | ⊕ 1985 | ↓ ↑ ⊕ Numerical Scientific | Array | ⊕ United States | Propsed extensions to APL |
| APEX | ⊕ 1997 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ Canada | Parallel APL |
| APL | ⊕ 1960 | ↓ ↑ ⊕ Numerical Scientific | Array | ⊕ United States | Array-centered programing language |
| APL SE | ⊕ 1995 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | freeware version of APL*PLUS |
| APL\360 | ⊕ 1967 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | APL for the 360 |
| APLBOL | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | APL written in SNOBOL |
| APLGOL | ⊕ 1972 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | APL with ALGOL-like control structures |
| APLOMB | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ Italy | Structural extensions to APL |
| APLSF | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | DEC APL with shared system functions and system variables |
| APLUM | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | APL2 for UM |
| APPLE | ⊕ 1968 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | Revision of APL for the Illiac IV. |
| APROL | ⊕ 1998 | ↓ ↑ ⊕ String and List Processing | Array | J with a Scheme flavour | |
| Ariel | ⊕ 1968 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | |
| D4 | ⊕ 1999 | ↓ ↑ ⊕ Business Data Processing | Array | ⊕ Ireland | APL with matching |
| Dictionary APL | ⊕ 1965 | ↓ ↑ ⊕ Business Data Processing | Array | ⊕ United States | nickname for Sharp APL |
| Fornax | ⊕ 1994 | ↓ ↑ ⊕ Experimental and other | Array | ⊕ United States | APL with patterns |
| Glee | ⊕ 2000 | ↓ ↑ ⊕ Experimental and other | Array | ⊕ United States | APL language with structures |
| IVSYS | ⊕ 1965 | ↓ ↑ ⊕ Experimental and other | Array | ⊕ United States | Early implementation of APL |
| J | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | Iverson's second (simplified, ascii, functional) array-based language |
| microAPL | ⊕ 1981 | ↓ ↑ ⊕ Experimental and other | Array | ⊕ United States | Microprogramming APL Dialect |
| OSU APL | ⊕ 1993 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | Hybrid APL/PASCAL to evaluate usability of visual languages |
| PPL | ⊕ 1969 | ↓ ↑ ⊕ On-Line | Array | ⊕ United States | Polymorphic Programming Language |
| SAPL | ⊕ 1978 | ↓ ↑ ⊕ Numerical Scientific | Array | ⊕ United States | Structural extensions to APL |
| SAX APL | ⊕ 1989 | ↓ ↑ ⊕ Experimental and other | Array | ⊕ United States | Sharp APL eXtended |
| Sharp APL | ⊕ 1965 | ↓ ↑ ⊕ Business Data Processing | Array | ⊕ Canada | IP Sharp |
| STSC APL | ⊕ 1980 | ↓ ↑ ⊕ Business Data Processing | Array | ⊕ United States | Scientific Time-Sharing Corp APL |
| Wyoming structured APL | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | Array | ⊕ United States | APL with Dijkstra's structures |
| ZPL | ⊕ 1993 | ↓ ↑ ⊕ Numerical Scientific | Array | ⊕ United States | Scientific parallel array processing language |