For me, Google video search, Google books (Internet Archive is good, but doesn’t always have the same stuff), Adobe InDesign (but in the process of learning LaTeX), and Typewise. As for the Google stuff, I liked Whoogle a lot, but almost all their instances seem to have been blocked or shut down. Also, apologies if this is repeating an earlier post.
Sure but they are not as effortless/not as feature rich as spotify and can be tricky to run on iOS. Google et al are also actively trying to break those projects these days. I say this as a daily freetube user.