Developer Conference is a yearly conference for all Linux and JBoss Developers, Admins and Linux users organized by Red Hat Czech Republic, the Fedora and JBoss Community. 2012 DevConf had 60 talks in 3 different tracks and additional to that 3 more rooms with workshops and hackfests. With around 600 participants DevConf.cz is one of the biggest events about free software in the Czech Republic. You might check out photos, videos and blogposts about past DevConf.cz
The conference has always been with no admission!