UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.
Kactus - Design version control without changing your tools
Moqups - The most stunning HTML5 app for creating resolution-independent SVG mockups, wireframes & interactive prototypes for your next project
Abstract - A secure, version-controlled hub for your design files
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Supernova Studio - The world’s first true design-to-code platform 🚀