PeerCast is a peer-to-peer (audio-only, for now) streaming system that allow webcasters to stream without a central server and the pile o’ bandwidth they’d normally need to support a large number of streams. How does it work? As PeerCast listeners receive a stream, they’re also relaying it to a small number of other users.
Recently, the PeerCast folks announced that their software is available as open-source (GPL). This technique is clearly how live webcasts of all sorts will be done in the future, at least until multicast is an option over the public internet. | About | FAQ