Principle - Principle makes it easy to create animated and interactive user interface designs.
Invision - Prototyping and collaboration for design teams
IxEdit - IxEdit is a JavaScript-based interaction design tool for the web.
Marvel - Turn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.
TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.