POP (Prototyping on Paper) - POP helps you make interactive prototype with ease. If you can draw, you can design apps.
uZoom - Marketplace for customized live video experiences
Invision - Prototyping and collaboration for design teams
Replai - Unlock the full potential of your video creatives with Replai
Marvel - Turn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.
Replica - Simple way for save articles, stories and web pages for reading: offline, organized and clean...