Theme Forest - The #1 marketplace for premium website templates, including themes for WordPress, Magento, Drupal, Joomla, and more. Create a website, fast.
Codester - The marketplace for ready-to-use web development assets
GeneratePress - Responsive, easy to use WordPress theme
CodeCanyon - Scripts and Snippets From $1 for PHP, JavaScript, ASP.NET, CSS, Plugins, HTML5, Mobile and more
Elegant Themes - Simple, yet beautiful WordPress themes with easy to use implementation and support.
PieceX - PieceX is a new platform available for buying and selling source code. All Engineers, From beginner programmers to senior engineers can use the PieceX. It provides source code in many languages including Java, C#, PHP ....