UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.
UI Movement - The best UI design inspiration, daily
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
UI8 - Carefully crafted UI design assets
Moqups - The most stunning HTML5 app for creating resolution-independent SVG mockups, wireframes & interactive prototypes for your next project
UI Garage - Specific mobile and web design patterns for your inspiration