Gnome-twitch provides a GTK3 interface for viewing streams on Twitch. At the moment you can
* browse popular streams,
* browse streams by game,
* search for streams,
* view streams,
* use the chat with a Twitch account,
* change the video quality,
* follow streams on your Twitch account and
* switch between player backends.
More features like recording streams, VODs (Video-On-Demand), integration of Twitch account features like following streams are planned.