Trees -> Typed nodes -> Graphs
MacInTouch More (1)
macOz Omnigraffle (2)
(1) https://en.wikipedia.org/wiki/MORE_(application)
(2) https://www.omnigroup.com/omnigraffle
Notes:
TreeSheets: Free Form Data Organizer
https://news.ycombinator.com/item?id=15057392
Quetree – A Q&A site that is tree-based and hierarchical
Trilium Notes is a hierarchical note taking application
(electron js)