Marginalia Search
marginalia-search.com
Marginalia Search is a small independent do-it-yourself search engine for surprising but content-rich websites that never ask you to accept cookies or subscribe to newsletters. The goal is to bring you the sort of grass fed, free range HTML your grandma used to write.

Has been useful the few times I tried it, though it keeps timing out for me. Maybe I look like bot traffic, maybe it is getting overloaded.