Open source CRM software has become a popular tool among businesses of all sizes to find a way to customize their CRM activities. To find the best open source CRM software, you do not need to look any further than this list. All of these options allow businesses to find the right balance between data entry and minimal time commitment for tracking customer interactions. They also offer credible insights into customer patterns and trends. These tools are cost-effective for businesses and can be scaled according to the individual needs of your business so that you only pay for what you need. The companies below have been reviewed based on a wide range of qualitative and quantitative statistics. In some cases, variable listing fees effect position on this list; however only highly-regarded firms are accepted through our review analysis. Learn more about our ranking process here.