Personal Web crawler and Web search engine. GPL

YaCy 0.51 is a personal Web crawler and Web search engine. It's also a P2P-based Web index exchange network without a central server and no censoring possibility. Web crawls can be done locally, or you can trigger a collaborative Web crawl with all other YaCy peers. YaCy is fun to use and shows interesting text, image, audio and video search results with direct links to Ogg, MP3, and video files. It has a cooperative bookmark system and many Web publishing functions.