1. ThemeForest
ThemeForest is the leader of proving premium WordPress themes and website templates, including multipurpose and responsive Bootstrap templates, email templates & HTML.
2. StudioPress
StudioPress is the leading provider for WordPress themes. StudioPress themes are powered by the Genesis Framework and are used by more than 100,000 sites.
3. Template Monster
Create Your Site Easily with Responsive WordPress Themes from TemplateMonster.
4. WordPress
WordPress.org includes the WP Themes Directory where you can find thousands of free and freemium themes from many authors.
5. Elegant Themes
Elegant Themes is a Theme Club with a beautiful collection of 87 different themes to choose from and more than 300,000 customers.
6. tagDiv
Provider from Romania selling through Themeforest, currently offering a collection of 2 items. Has sold 81,264 licenses so far, and has 1,609 followers on Themeforest.
7. ThemeFusion
ThemeFusion set out to make the perfect theme and Avada was born, a #1 selling theme and a user base of over 100,000 people.
8. MyThemeShop
MyThemeShop offers free and premium themes. Premium themes can be bought individually or through a membership Theme Club, with more than 1 theme added each month.
9. TieLabs
TieLabs offers high quality and Good Looking Premium WordPress Themes and Plugins that are Easy to Use and ready for just about anything like News, Magazine and Blog
10. X Themeco
Providers of the famous X WordPress theme. Achieve virtually any look and layout from within the one and only X WordPress Theme.