X2CRM is an award winning open-source CRM software that thrives on simplicity and flexibility. They strive to help their clients market, sell, and support their own customers in an environment of cooperation and creativity. For them, apps were the way to best help clients manage customers. Their powerful Android and iOS apps have become legendary in the field of mobile CRM. Their philosophy is simple. If you provide a flexible mobile app and let other developers improve upon it, you're going to get the best CRM software as a result. So far this formula has proven to be a success for X2CRM, as they continue to be recognized for their great work in the CRM industry. The customization options for their apps have put them over the top and given developers a way to continuously improve on what is already a very strong and reliable open-source customer relationship management program.