Flatlogic - Flatlogic is a platform for businesses allowing them to generate Business Management Apps in minutes.
Invision - Prototyping and collaboration for design teams
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Cruip - Landing page templates for startups
Craftwork - A collection of User Interface resources made by Craftwork
Angle 2 Mockups - A giant Sketch Library for creating app presentations