BlitzBasic/AmiBlitz
Amiga Blitz Basic was originally developed as commercial software under the name of Blitz Basic and then Blitz Basic 2 by Simon Armstrong and Mark Sibley of Acid Software in New Zealand. It was later re-released as freeware under the GNU General Public License. More recently Bernd Roesch and others of Amiforce have continued development of the editor and compiler, under the name Amiblitz.