YaCy (ya see) is a free distributed search engine, built on principles of peer-to-peer (P2P) networks. Developed by Michael Peter Christen et al.
License: Open Source
Presearch and YaCy are both decentralized search engines but cater to different user needs. Presearch focuses on user rewards and a user-friendly experience, while YaCy emphasizes open-source, community-driven results with high data privacy.