- Home What's New Getting Started APL On The Net Articles & Programs Other APL Sites Miscellaneous I Want Everything! JimW's APL Information APL is a programming language best known for its use of non-ASCII symbols, including a few Greek letters. It is a terse, general-purpose, high-level language created by Ken Iverson and colleagues at IBM in the 1960s. Whereas many computer languages began as ...www.chilton.com/~jimw