Peer-to-peer wiki is a server-less system that allows wiki sites to be shared between peers. It is based on a peer-to-peer version control system, which takes care of sharing, transmitting the updates, and storing the history of pages. The first P2P wiki system was designed and implemented by Reliable Software as part of their P2P version control system, Code Co-op. Buzm is a P2P desktop application that integrates and extends TiddlyWiki.