Otto - Otto is a full-service advertising, web development, and public relations agency.
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.
Aika - A simple alternative to Google Calendar for timeblocking/timeboxing.
Noizio - Feeling that the noise of the big city is too much for you to bear?
Zonebox - Get more done by timeboxing your tasks
Moodly - Get a better sense of focus and relaxation by listening to ambient nature sounds.