The source of this project is hosted on sourceforge, if you wish you can get the latest version with the following command: svn co https://svn.fhem.de/fhem/trunk/fhem If you wish to contribute to the project, then - create a sourceforge account - send an email to the project manager to add you as developer to the project (right know this is r dot koenig at koeniglich dot de) - check out the source - if it is already checked out, it makes sense to do an update before implementing your changes: % svn update - make your changes - test if it is working (Really !!!) - make an entry in the CHANGED file, giving your changes a "title". - describe your changes in the file HISTORY, and dont forget to mention your name and the date of change - it makes sense to do a "svn diff" before checking in the stuff with svn commit