> I would also very much like it if Orion was open source, it would make me feel a lot better committing to and recommending a browser if I had actual assurances it's behaving appropriately, beyond a company saying "trust me", no matter how nice/cool they seem at the time.

Kagi isn't 100% open source but you still use it and recommend it?

How do you know they aren't spying on the backend?