Look at that SaaS - Inspiration and resources for SaaS founders
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Good Sales Emails - Best sales emails from great companies
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
SaaS 1000 - Free exportable list of the fastest growing SaaS companies
HelpScout - Help Scout is a simple, straightforward way to provide excellent support