Wonderlic - Wonderlic offers pre-employment tests and student selection assessments.
The Product Management guide - A book on how to create and ship products that people love
HackerEarth Recruit - HackerEarth provides technical recruitment solutions for talent sourcing and skill assessment.
Product School - The global leader in product management training
iMocha - Make intelligent talent decisions.
Intercom on Product Management - The ultimate resource for aspiring product managers