YaCy – Distributed P2P Based Web Indexing and Anonmymous Search Engine
http://www.yacy.net/yacy/

YaCy is a peer-to-peer application for web search. This is your web search engine for freedom of information: search requests are anonymous, independend and uncensored. No central server and no storage of user behaviour. YaCy can be used as your own private search engine or set up a search portal. Use YaCy to provide a search function for your own web pages. Host web pages with the built-in http-server. YaCy is GPL licensed free software. This has been added to Privacy Resources Subject Tracer™ Information Blog. This has been added to the P2P section of Deep Web Research Subject Tracer™ Information Blog.