I know that #IndieSupportWeeks were supposedly a thing that ended in early 2020, but I don’t see why we shouldn’t continue shouting-out to the devs of apps we use everyday. Late in 2020, @Splattack on the Zettelkasten Forum brought up Monodraw – think OmniGraffle, but with ASCII box art!
Sketches and diagrams with arrows look very innocent, yet they mean so much for our work. But they only carry meaning if you’re honest with yourself and depict what’s really going on in the app; then they become a great tool to understand and analyze code. (Better than note-taking can ever be when it comes to object-oriented code.)