YaCy

«YaCy (pronounced ‹ya see›) is a free distributed search engine, built on principles of peer-to-peer (P2P) networks. Its core is a computer program written in Java distributed on several hundred computers, as of September 2006, so-called YaCy-peers. Each YaCy-peer independently crawls through the Internet, analyzes and indexes found web pages, and stores indexing results in a common database (so called index) which is shared with other peers.

Compared to semi-distributed search engines, the YaCy-network has a decentralised architecture. All YaCy-peers are equal and no central server exists. It can be run either in a crawling mode or as a local proxy server, indexing web pages visited by the person running YaCy on his or her computer. (Several mechanisms are provided to protect the user’s privacy.)

Access to the search functions is made by a locally running web server which provides a search box to enter search terms, and returns search results in a similar format to other popular search engines.» (Source: wikipedia.org, 2014-02-13)

Table of Contents

Links

In the Press

Images

yacy-search-mask-small
Search mask

yacy-search-results-text-small
Search results (text)

yacy-search-results-images-small
Search results (images)

yacy-network-visualisation-small
Network visualisation

yacy-administration-console-small
Administration console

All images:
© YaCy Project
GNU General Public License: Version 2

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