Fat Free CRM is a free CRM software that runs on Ruby on Rails. Unlike with competing products, it is not just a trial or limited version, but a complete CRM software solution offered to you at no cost. It has all of the features that you would expect to find in an advanced CRM program, such as contact and lead management, group collaboration and information sharing, sales opportunity tracking and many others. Fat Free CRM is supported not only by its original developers, but also an independent community of advanced users that have made great contributions to fixing bugs and making it more functional. As it is completely open source, everything about it can be modified by users with knowledge of Ruby on Rails to create a CRM that would be unique to their organization. Of course, it can also be set up and used out of the box, even by those with no coding knowledge.