Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Start on Android by Google - Developer program to optimize your app before you launch
Invision - Prototyping and collaboration for design teams
Visage - Visage is a new platform that enables non-designers to easily create beautiful, on-brand visual content such as data visualization, reports & much more
Sketch - Professional digital design for Mac.
UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.