Look at that SaaS - Inspiration and resources for SaaS founders
MartechGuru - Keep track of your marketing technology SaaS contracts easily. No more spreadsheets.
Good Sales Emails - Best sales emails from great companies
CabinetM - Pinterest for marketing tools: find, compare and build stack
SaaS 1000 - Free exportable list of the fastest growing SaaS companies
The Angel Philosopher - A compilation of Naval's wisdom, knowledge and thoughts.