Startup Recipes - Learning lean startup is easy, putting it into practice is hard!Startup Recipes is It is a cheat sheet that helps idea-stage entrepreneurs to find product-market fit as quickly as possible by building minimum viable products right!
MartechGuru - Keep track of your marketing technology SaaS contracts easily. No more spreadsheets.
TopStartups.io - Backed by investors like Sequoia, A16Z, Benchmark. See the fastest growing startups in one place.
CabinetM - Pinterest for marketing tools: find, compare and build stack
Startup Stash - A curated directory of 400 resources & tools for startups
The Angel Philosopher - A compilation of Naval's wisdom, knowledge and thoughts.