Swisscows I don’t believe has an index, Mojeek does.

Brave bought their index. The other two did a PR announcement that they are gonna build one, you seen much else? Point very much still stands.

(some) alternative search engines use Bing because building an index is hard and the only project I know of doing this work from base is Mojeek: https://www.mojeek.com/

It’s a three-pronged attack: Subliminal, liminal, and super-liminal

nepenthe

It’s a Markov-chain-based text generator which could be difficult for people to implement on repos depending upon how they’re hosting them. Regardless, any sensibly-built crawler will have rate limits. This means that although Nepenthe is an interesting thought exercise, it’s only going to do anything to things knocked together by people who haven’t thought about it, not the Big Big companies with the real resources who are likely having the biggest impact.