Fat Free CRM is an ope source platform that is based on Ruby on Rails, and since it has been on the market, the reviews that it has received has made it the best open source CRM software currently available on the market. It is known for having excellent features that help to enhance a business's customer relations by easily managing various aspects of the business world. When using Fat Free CRM, people will be able to help build excellent campaigns and manage any leads that come to the business. Those who uses Fat Free CRM will also be able to search different aspects of their leads and score them to make sure that the most productive leads will get taken care of first.