Marvel for iOS - Rapid design and prototyping for the iPhone and iPad
Mockup Generator - Create attractive product screenshots with just a few clicks
Peetch - The last PowerPoint Pitchdeck you’ll ever need
MockMagic - A free, easy-to-use device mockup generator
Keynotopia - Prototyping straight into Keynote or Powerpoint
Dimmy.Club - Device mockup generator for your website and app screenshots