Meazure - What are the dimensions of that image? How big is this window?
Tribe of Mentors - Short life advice from the best in the world, by Tim Ferriss
On-Screen Ruler - lightweight, free, semi-transparent ruler
The Mentoring Club - Free mentoring from the best in their field
MentorCruise - Personalized mentorship experiences
Mentorcam - Mentorcam is a marketplace where people can access well-known public figures for 1:1 advice and mentorship.