Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Theme Forest - The #1 marketplace for premium website templates, including themes for WordPress, Magento, Drupal, Joomla, and more. Create a website, fast.
Placeit - Generate realistic product shots in seconds
ThemeFuse - ThemeFuse is a store that provides high-quality designed WordPress themes to let you stand apart from the crowd.
Mediamodifier - Create beautiful designs and product mockups in seconds.
ThemeGrill - ThemeGrill is an online marketplace that develops and sells WordPress themes and plugins that you can buy to create professional websites for businesses, magazines, and blogs.