SaaS 1000 - Free exportable list of the fastest growing SaaS companies
pickSaaS - Hundreds of SaaS products, analyzed.
Mattermark - Ranking 800,000+ high growth Internet companies
Look at that SaaS - Inspiration and resources for SaaS founders
Close - A CRM with built-in calling, SMS, and email
Cardlife - Track all your business subscriptions with Cardlife.