If you run a business, you already know it can be difficult to budget for the software you need. That's why open-source software is such a gift. It features a license that makes it free to download and use. Taking advantage of it can help spare a portion of your budget, and it's a great option to cover your CRM needs. CRM software is designed to help businesses handle data related to customer relations and sales. We've compiled this list to help you find leading open source CRM software that you can use to improve the way you do business. 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.