If you like to play League of Legends, Dota 2, Starcraft 2 or any other competitive multiplayer game, you may know the game streaming service Twitch.tv were casual and "pro" games get streamed all day long.
You can browse the various games when you are on the site, and tune in to one live stream at a time per browser window.
If you want to watch multiple streams at once, you have the option to open a second, third and so forth browser window to do so, but that is not too comfortable.
MultiStream by KBMOD solves that. It is a web service that you can use to display several Twitch.tv streams in a single browser window.
You can head over to the site right away to paste stream urls or IDs into the form on the site. A layout selector is displayed to you as soon as you add the first stream to the service.
The selector is modified automatically whenever you add or remove streams from the page. As far as layout choices are concerned, you can select layouts that include chat and layouts that hide the chat window.
The maximum number of streams that you can add to the service is six, which means that you can watch a total of six streams side by side in a single browser window.
That is of course, if your connection is fast enough to support this.
Chrome users can download and install the Twitch Multistream extension which makes things comfortable. All you have to do now is open all streams that you want to watch in different browser tabs and click on the extension icon afterwards.
All open streams are displayed, and all that is left to do is select the open multistream option from the context menu to start watching all streams in a single browser tab in Chrome.
You can enable or disable sound or chat for each stream individually using on-screen controls or menu items located at the bottom of the screen.
Other options that you have include launching a stream in full screen mode, or to change the quality of select streams.
The one thing that seems to be missing is an option to load different streams or close one of the streams that you have open.
Multi-streaming reminds me a lot of poker players who play several tables at the same time. It is certainly not for everyone, but if you watch multiple streams at times, or have not done so because you could not figure out how to do it, then you may find the service useful for that.