A super robust open-source platform for managing your relationships with people and other organizations. Designed with nonprofits, advocacy groups, and other Civic-sector organizations in mind, CiviCRM is a highly customizable and extendable CRM solution that is ready to meet the needs of any business or group of any size.

An Open Source ecommerce solution providing sellers with powerful marketing and sales tools as well as a flexible online shopping cart system, Magento allows you to control and tailor every aspect of your online sales.

A powerful and highly-extendable Content Management System with virtually no limitations, Joomla! is an excellent solution for managing even the most complex websites. In fact, you're looking at a Joomla!-based website right now!

Designed for content creators and bloggers, WordPress has become one of the most popular content management systems due to combining powerful tools and extensions with a user-friendly interface. With a large Open Source developer community, WordPress offers an easy-to-learn option that can rival even the most high-tech options for a professional website.

Tailored for small businesses, QuickBooks is a suite of tools for managing payroll, inventory, sales, and other business needs. From marketing to merchant services and supply management, QuickBooks is a popular solution for vendors and service providers around the world.

Dubbed the world's first "Community Organizing System", NationBuilder uniquely combines a Content Management System tailored for organizing with a powerful and deeply social Customer Relationship Manager - seamlessly bringing together all of your interactions online and on the ground.