YaCy is a free search engine software that allows you to join a community of search engines or create your own search portal. There are three use cases available: P2P mode web search where all users are equal, Your Search Portal which is independent from other peers, and Intranet Search for creating a search portal for your intranet or web pages. YaCy promotes decentralization by running your search engine across many private devices, removing the reliance on a single company or individual. Installation is quick and easy, taking only three minutes. Check out the live YaCy network and try out the demo!
https://yacy.net/