Request for Unusual Search Tools

[xx511134bz]

What's out there for searching that's not google/bing/ddg? I'm thinking answers could be Lexis-Nexus, shodan.io, worldcat.org

[kkoncevicius]

https://search.marginalia.nu/ was posted on HN not that long ago.

[ColinHayhurst]

https://www.searchenginemap.com/ and lists here: https://twitter.com/SearchEngineMap/lists