Since Yahoo! got out of the game, Bing is the only major search engine in the English speaking world providing an API for developers against their index.
Yandex _might_ be another option (haven’t looked) or even Baidu. Of course there are unofficial ways to scrape Google but you can’t build a legit business on that.
Side note: a far simpler first step than trying to break up Google would be requiring them to have a search API and contractual obligations that enable others to do business on top of it.
This would have been a great way to deal with Facebook's attempt at building out a single backend for their messaging platforms.
Because yes, the ability to use a single protocol for cross-service messaging, with E2E by default, disappearing messages, and text (or presumably email) fallback would actually be spectacular. But as a spec.
Hell, as a spec, this would create an argument to migrate toward a user@service model and finally start relegating phone numbers to legacy status.
Yandex _might_ be another option (haven’t looked) or even Baidu. Of course there are unofficial ways to scrape Google but you can’t build a legit business on that.
Side note: a far simpler first step than trying to break up Google would be requiring them to have a search API and contractual obligations that enable others to do business on top of it.