Lexi - Speak to Alexa through your iPhone
MockMagic - A free, easy-to-use device mockup generator
Placeit - Generate realistic product shots in seconds
Mockup Generator - Create attractive product screenshots with just a few clicks
Dimmy.Club - Device mockup generator for your website and app screenshots
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.