Zattoo

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Zattoo is a proprietary peer-to-peer Internet Protocol Television system ("P2PTV") with current focus on European channels, licensed content, and Digital Rights Management. It is developed by researchers and programmers based out of Ann Arbor, with corporate offices in San Francisco and Zurich. As of December 2006, the product is in public beta testing. The player is based on H.264 (FFmpeg), and is Mac OS X, Linux, Windows 2000, Windows XP and Windows Vista compatible. It needs a minimum downstream bandwidth of 400 kbit/s on the client side.
The service is currently restricted to Switzerland, Denmark, Spain, Germany and the United Kingdom, but is expected to expand to other European countries, (with Austria, Belgium, and Poland being at the top of that list[2]) then to Canada and the USA while adding fee-based channels to its list. It is also designed to only allow specific audiences to watch specific channels, thanks to geolocation of the IP address assigned to the user's computer (hence the restriction to a few countries for the time being). This restriction prevents, in theory, British users from watching French channels. While BBC world is available to Swiss IP addresses, it is not available to British ones. Users located outside the intended market can however easily circumvent this restriction by re-routing their internet traffic to an IP address located in the unrestricted zone.