Download of editor_plugin.js (editor_plugin.js ( external link: SF.net): 966 bytes) will begin shortly. If not so, click link on the left.
"PX Point de vente" is a French "stable" POS software written in Delphi/MySQL, and used in a few Store. It was created by W2C, Graoulux and then Prophetix. Now it is not sold anymore and would be a good start point for an opensource POS Software.
