Odoo

Odoo is a suite of business applications that a company can adopt one at a time or run together as an ERP. Each app covers a function, such as CRM, accounting, inventory, manufacturing, project management, point of sale, helpdesk, email marketing, e-commerce or a website builder, and all of them work on the same data, so a sale updates stock and invoicing without re-entry. The core is open source, with a free Community edition and a paid Enterprise edition, hosted by Odoo or installed on the company's own servers. It is used mostly by small and mid-sized companies, often deployed with the help of an integration partner.