OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
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.
Kick - Overcome shyness with actionable Kicks ❤️
MindForger - Thinking notebook and Markdown IDE web site home page
Birdbox - Team bookmarking and note-sharing.