a P2P filesharing client which is based on the Gnutella network. It offers advanced functions and integrates all common Gnutella extensions (the best Java Gnutella Client)
Large-Scale Open-Source Web Search YaCy is a scalable personal web crawler and web search engine. One YaCy installation can store more than 10 million documents, but in a community of search peers YaCy can provide a search index of unlimited size.