pickSaaS - Hundreds of SaaS products, analyzed.
SaaS 1000 - Free exportable list of the fastest growing SaaS companies
Ultimate SaaS Guide - 100 Q&A asked around scaling, sales and raising capital.
Bullet Train - The Ruby on Rails SaaS-in-a-Box.
Saasler - Build SaaS integrations in days or weeks — not months
Look at that SaaS - Inspiration and resources for SaaS founders