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.
Solvespace is a FLOSS light weight 3D CAD alternative. Although it lacks the advanced features of Solidworks works really great for most of my 3d designs.