ACC

ACC, standing for Action Code Compiler, is an ACS compiler. There exist a few different programs named ACC, of which the most important are the original Raven Software ACC (developed for Hexen) and the ZDoom ACC, which supports the many ACS extensions added to ZDoom, GZDoom, Zandronum and Skulltag.

ACCP
ACCP is a port of ACC by Jim Valavanis (Jval) to the programming language used to compile ACS scripts for DelphiDoom.