Design Principles - An open source repository of design principles and methods
Mobify - Mobify is a mobile commerce platform used by retailers to deliver exceptional responsive web and hybrid app shopping experiences.
Facebook Design Resources - A collection of free resources made by designers at Facebook
GoodBox - Goodbox is a commerce platform for small and large businesses to reach out to a wider audience.
Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
Unbound Commerce - Unbound Commerce is a mobile commerce provider for mid-market retailers.