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.
I use
gonicto serve up my music collection via subsonic API, then have play:sub and/or substreamer ios apps that use/pull from it. gonic can scrobble for you when clients play songs. Combined that withmajolafor self-hosted scrobbling for the last 18 months Ive been quite happy with it.