Product Disrupt - A design student's list of resources to learn Product Design
BrainAround - Q&A site for college textbook problems & solutions
Endorba - Create your Course Library
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Computer Science Field Guide - Online interactive resource for students to learn about CS
Spires - Connect w/ Oxford or Cambridge University tutors online