A little app to draw graphs: https://git.sr.ht/~akkartik/snap.love
I've wanted something like this for a long time. Intended for small graphs where laying things out by hand is not too painful, and it's nice that things don't move around every time I make a change, as happens with graphviz (https://graphviz.org). The file format is also amenable to git; no long lines, and adding new nodes or edges doesn't reorder unrelated nodes and edges.
After playing with it for a bit, I notice that there's also a limit on the number of edges. Too many edges, and the dumb layout algorithm (connecting centroids of nodes) starts to creak.