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Marvel User Testing Record what users do with your designs and sketches. Free!
ClickDeploy One click deployments from GitHub
Functional Programming in Swift Learn core concepts of functional programming with Swift
The Sense of Style Great book on how to write
Unicorns Live stream your iPhone screen
Marvel Embeds Embed interactive prototypes on any site (including Medium!)
Wunderlist Public API Build with Wunderlist
Marvel for Apple Watch See your sketches, designs and prototypes on the Apple Watch
Periscope Explore the world through someone else's eyes
Libraries.io The open source discovery of libraries for programmers
TypeSource Google Web Font inspiration & playground in HTML & CSS
The Power of Habit: Why We Do What We Do in Life and Busines Habits can be rebuilt.