Forth, invented by Chuck Moore, was the first stack-based language. Forth supports a Concatenative style of programming, although it makes use of Parsing words more than subsequent languages.

Interesting implementations:

Two classic texts by Leo Brodie:

Forth implementation written in [Literate Programming] style:

This revision created on Wed, 10 Sep 2008 07:32:42 by mnestic (adding jonesforth)