Golden - Mapping all human knowledge

Better Notes - Simple notes app that ties notes together with #hashtags

Sutle - Save and organize resources into a directed learning path.

Paper - Super-clean writing space with a lot of configurability that stays out of sight when you don’t need it.

QuestBook - The fastest way to teach and learn

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.