With a name like Fat Free CRM, you might wonder what this application is all about. If you'll take a long look at this uniquely named app, you'll find out that it provides businesses with effective CRM services via an open source model. As a result, Fat Free CRM is both affordable and customizable. For this reason, it has been recognized as the best open source CRM software. To get started with Fat Free CRM, you'll download its source code from a public repository called GitHub. Next, you can install it on your computer. The application works via Ruby on Rails and aims to provide a clean code base for businesses of every size. Although companies may need to invest time and effort making Fat Free CRM fit their environment, they readily reap rewards in the form of a CRM solution that precisely fits their business model.