Tribe of Mentors - Short life advice from the best in the world, by Tim Ferriss

MentorCruise - Personalized mentorship experiences

Pathwright - Teaching platform where educators, trainers and others can easily create online courses.

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.

The Mentoring Club - Free mentoring from the best in their field

Hopps - Start instant screenshare sessions with vetted experts to get help with the tools you use at work all day, every day.