Customer relationship management (CRM) tools help a company of any size to make the most of its existing customer base. Since it is easier to work with existing customers than it is to recruit new ones, this population represents a key source of potential income for any business. Some of the best CRM tools are those made by Sugar CRM. As one of the nation's ten best developers of CRM tools, Sugar CRM is recognized for its exemplary work in the area of making the software easy for new employees to use. The software systems made by Sugar CRM do not require months of intensive training. A new hire can get started using the software and connecting with the company's clients. The CRM tools made by Sugar CRM allow a company to email a customers with suggestions of related products, refill or reordering reminders or suggestions for buying other products.