Minzel - Minzel is a beautiful and free mindmapping tool built for creatives and gives you the power to...
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Wisdomap - Wisdomap Medicine is a study aid that helps medical students create differential diagnoses and suitable management plans from a presenting complaint and structured revision notes.
Standard Notes - A safe place for your notes, thoughts, and life's work
Mindmaps.app - Mindmaps.app is a browser-based mind mapping software that you can use to generate well-ordered mind maps.
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.