Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Marvel (mobile) - Turn sketches into prototypes (new iOS & Android apps)
Placeit - Generate realistic product shots in seconds
Gomix - The easiest way to build the app or bot of your dreams
Mediamodifier - Create beautiful designs and product mockups in seconds.
Mockup Generator - Create attractive product screenshots with just a few clicks