Odoo (acronym for On-Demand Open Object) is a suite of Belgian origin business management software tools that include customer relationship management, e-commerce, billing, accounting, manufacturing, warehouse, project management, and inventory management.

The Community version is libre software, licensed under the GNU LGPLv3. The Enterprise version has proprietary extra features and services. The source code for the framework and core enterprise resource planning modules is developed by the Belgium-based Odoo S.A. Odoo is available for both on-premises and ready-to-use SaaS environments. The source code for the OpenObject framework and the core ERP modules are provided by Belgium-based Odoo S.A.