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.

Decks - Decks is a study application designed to keep all your stuff in one place, instead of having an app for flashcards, another for notes, and one to watch tutorials, create a deck and keep everything organized there.

Tyke - Mac menu bar app that @torrez really needed to take notes

Mochi - Write notes and flashcards with Markdown and study them with spaced repetition.

Thought Train - Stop using sticky notes to remember what you're doing 📒 🚫

Flashbee - Learning Made Fun