Designlab - Learn design by doing, with hands-on projects & mentorship
Invision - Prototyping and collaboration for design teams
Product Disrupt - A design student's list of resources to learn Product Design
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Visily - The easiest and most powerful wireframe software for agile teams.
Craftwork - A collection of User Interface resources made by Craftwork