Merit - Merit Network is a nonprofit member-governed organization providing high-performance computer networking and related services.
The Product Management guide - A book on how to create and ship products that people love
Eleo - Eleo is an online donor management software.
Intercom on Product Management - The ultimate resource for aspiring product managers
ActionSprout - ActionSprout provides tools and training to help nonprofits realize their goals on Facebook.
Xobin - Most Comprehesive Pre-Employment skills testing and Psychometric Assessment Platform.