Noisli - Noisli is a fantastic background noise and color generator for working and relaxing. Online soothing ambient sounds like White noise, Rain and Coffee Shop.
Quoteplay - A tiny app that sends you one startup quote a day.
Noizio - Feeling that the noise of the big city is too much for you to bear?
Startup Notes - Most actionable advice from each Startup School speaker
zenmix.io - Ambient background sound generator
Mattermark Daily - A curated newsletter of blog posts from investors & founders