Tribe of Mentors - Short life advice from the best in the world, by Tim Ferriss
Xmind - Xmind is a brainstorming and mind mapping application.
MentorCruise - Personalized mentorship experiences
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Frontend Mentor - Supercharge your front-end skills by building in a real-life workflow. Solve real-world HTML, CSS and JavaScript challenges whilst working to professional quality designs.
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.