Communifire - Enterprise Social Collaboration Software
SaaS 1000 - Free exportable list of the fastest growing SaaS companies
Workplace by Facebook - Connect everyone in your company and turn ideas into action.
Look at that SaaS - Inspiration and resources for SaaS founders
DigitalChalk - Online Training Software and Learning Management System (LMS)
Inside SaaS Sales - 1000+ sales emails and voicemails from top SaaS companies