There are two that I know of: YaCy: https://github.com/yacy/yacy_search_server https://github.com/yacy/yacy_search_server (functional) Seeks: https://github.c

There are two that I know of: YaCy: https://github.com/yacy/yacy_search_server https://github.com/yacy/yacy_search_server (functional) Seeks: https://github.com/beniz/seeks https://github.com/beniz/seeks (defunct?) --- There's also SearX, which isn't distributed but is a metasearch engine (pulls results from multiple search engines) that you can self-host [0] or use one of its many mirrors [1]. [0] https://github.com/searx/searx https://github.com/searx/searx [1] https://searx.space/ https://searx.space/