Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Flare by GoDaddy - Discover, give feedback and support startup ideas
Invision - Prototyping and collaboration for design teams
Generating Product Ideas - Find ideas for your next business or side project
Sketch - Professional digital design for Mac.
Wittycircle - Networking tool for entrepreneurs, makers and curious minds.