There are currently no downloads available, however upon release you will be able to choose from the following:Client for Linux (tar.gz)
Or get the latest source from SourceForge using subversion:
svn checkout http://sourcekeep.svn.sourceforge.net/svnroot/sourcekeep
Note: Unless you are connecting to an existing site, you will need the backend code!
Any modern Linux distribution with GTK+2 and above.
The backend requires a webserver (Apache recommended) running PHP 4.4 or above and MySQL 3.23 or above.