eList from Elegant Themes is a verstile Directory WordPress Theme. By using eList, you can create an online directory of any type, and allow your visitors to submit new listings from the front end. The theme also comes with eCommerce integration, allowing you to charge your visitors for new or featured listings.

Membership Fee:

Full Access to all the themes: $39/year

Quality Control is a  WordPress Application Theme that transforms your site into a full-blown issue tracking system. Quality Control will help you keep track of your project development with ease. Quality Control allows users to create tickets, assign statuses, set priorities, milestones, categories, and tags. Other users can then interact with the tickets, updating their state, milestone, adding comments, and more. Setup one or multiple projects – each with custom user groups to limit access on different projects.

Price :

Standard Edition    : $99

Developer Edition : $159

Club Standard         : $249

Club Developer      : $349