Latest source is available through
svn checkout http://www.proteios.org/svn/trunk/ proteios
NOTE! Use the trunk version only for testing/development. If you have important data make sure to create a backup first. We cannot guarantee that upgrading to/from a specific trunk revision will work. In the worst case you may loose data and get stuck with a dead-end release of the database schema.
Not interested in source, download release package...