Mullvad Leta – Search engine developed by Mullvad, focused on privacy. It uses Google and Brave Search APIs while minimizing user tracking. Searches are cached to enhance privacy, and results are free from third-party tracking links.
Link: https://leta.mullvad.net/
Anna's Archive – Open-source search engine for alternative digital libraries, often called "shadow libraries." It aggregates metadata from sources such as Z-Library, Sci-Hub, and Library Genesis, providing free access to books and scientific articles.
Link: https://annas-archive.org/
Encyclosearch – Open-source search engine developed by the Knowledge Standards Foundation. It allows querying over 30 encyclopedias in 12 languages, providing enriched and decentralized search results.
Link: https://encyclosearch.org