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.
One thing I really liked but quit because it wasn’t FOSS was WorkFlowy. I did try logseq a while back and thought it was ok, but had too many other bells and whistles in addition to what I really wanted which was just a collapsible list with infinite hierarchical depth. I really wish someone would add this functionality to an email client like Thunderbird as part of its tasks.