Contra Wireframe Kit - Open source wireframe kit for design and prototyping 🚀
Theme Forest - The #1 marketplace for premium website templates, including themes for WordPress, Magento, Drupal, Joomla, and more. Create a website, fast.
Platforma - Wireframe library of layouts and UI elements
ThemeFuse - ThemeFuse is a store that provides high-quality designed WordPress themes to let you stand apart from the crowd.
Craftwork - A collection of User Interface resources made by Craftwork
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.