Dynalist.io is the best note taking software I've seen in 12 years of using note-taking software. Features endlessly hierarchical lists, with tagging, links to other nodes, images, zooming to a single node, full-text search, Chrome web clipper, Dropbox backup.

- It's like Workflowy, but better... - I've tried Evernote, OneNote, Apple Notes, Google Keep... they all just end up becoming a massive mess of unorganized notes.