Ongame

OnGame is the worlds third largest online poker network and is owned and developed by the Swedish Group Ongame. OnGame is one of the most successful poker networks in the world and provides an environment where 5 million players form the world play against eachother.

They offer their client to all platforms, Windows, Mac and Linux. And the client has very nice graphics and speed. Features are always added to keep the software fresh and up to date.