Its more about the quality of the code. It needs a good bit of overhauling, probably a rewrite. Polix is doing something along those lines to work primarily with ASSS, which we will switch over to when its ready. That will be open sourced. Additionally, the biller is based on SOS's modified Catid biller, so a significant portion of it is already freely available. All the modifications are nothing but SQL and some commands, and the site scripts read from the database files.