Open-source software is great because it's free and it provides the opportunity for advanced customization and collaboration freely through an open exchange of ideas. Fat Free CRM is an example of an open-source piece of customer relations management software, and it is not only free to use, but it can be tweaked to perform optimally in just about any business situation. The software is based on the Ruby on Rails system, and it comes with a number of amazing features right out of the box. Fat Free CRM includes features that help with lead tracking, opportunity management, group collaboration, and campaign management. While many brands will find those services ideal and sufficient, the software can be upgraded for free with a number of community generated expansions. The creators of Fat Free CRM wanted to help the industry find a new balance, so the goal was to develop strong coding that could be expanded by devoted developers.