Teevox!

MultiTwitch.tv lets you watch multiple Twitch.tv streams at the same time (as long as your computer can handle it). Simply put the streams you want in the url. For example: multitwitch.tv/siglemic/cosmowright. MultiTwitch will optimize the layout of streams to give you the maximum size on each of the streams, while maintaining aspect ratio

Stream up to 12 twitch channels at once. Save a stream url to share all the streams you want. Or pick a game to view live popular channels four at a time to discover new streamers.