Mockups Design - Mockups Design is the most leading web-based application that comes with a vast collection of creatively design mockups for all kinds of products and devices.
AppLaunchpad - Create free beautiful screenshots for App store/Google play
Mr. Mockup - Mr.
Placeit - Generate realistic product shots in seconds
Pixeden - Pixeden is an all-in-one premium design and web resources platform that provides high-quality graphic design templates and lots of other files.
Smartmockups - Create stunning product mockups, easily and online.