Mockup Generator - Create attractive product screenshots with just a few clicks
Invision - Prototyping and collaboration for design teams
MockMagic - A free, easy-to-use device mockup generator
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Craftwork - A collection of User Interface resources made by Craftwork
Gogobot - Your guide to the good life