YaCy

YaCy is open-source software for running a search engine on your own infrastructure. It can be used for local or intranet search, an organization-specific web search portal, or participation in a distributed peer-to-peer web index.

Create a private search portal for internal files or web pages; crawl and index selected websites for an organization; join a decentralized search network; run search without relying on a central provider.

Free search server software; local, portal, intranet, and peer-to-peer modes; independent crawling and indexing; shared decentralized index option; privacy-focused design with no built-in personalized data collection or phoning home.

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