K, by Arthur Whitney, is a propretary collection-oriented programming language (see also its companion Kdb, a DBMS written in K) descendant of APL and A+ with some influence from Lisp, especially suited to time-series analysis (financial application, insurance and other industries). A couple of interesting articles from Kuro5hin: Jayson Nordwick Slashdot post: A system based on K: The K company:

This page is linked from: CoSy   Glee   Syntax in K   TUI