YaCy is a free p2p web search engine that anyone can use to build a search portal for their intranet or to help search the public internet. When contributing to the world-wide peer network, the scale of YaCy is limited only by the number of users in the world and can index billions of web pages. It is fully decentralized, all users of the search engine network are equal, the network does not store user search requests and it is not possible for anyone to censor the content of the shared index. We want to achieve freedom of information through a free, distributed web search which is powered by the world’s users.


YaCy is cross-platform software, source code for Windows, Linux, and Mac OS are available here.

For Ubuntu, download YaCy 1.0 for GNU/Linux

Once you get the source code, extract it and then run startYACY.sh to start YaCy. Finally in your web browser, locate to http://localhost:8090

Note that YaCy need java to be installed. Just search and install in Ubuntu Software Center.