Odoo (formerly known as OpenERP and before that, TinyERP) is a suite of open core enterprise management applications. Targeting companies of all sizes, the application suite includes billing, accounting, manufacturing, purchasing, warehouse management, and project management.

The source code for the OpenObject framework and core ERP (enterprise resource planning) modules is curated by the Belgium-based Odoo S.A. Additionally, customized programming, support, and other services are provided by an active global community and a network of 500 official partners. The main Odoo components are the OpenObject framework, about 30 core modules (also called official modules) and more than 3000 community modules.

Odoo has been used as a component of university courses. A study on experiential learning suggested that OpenERP provides a suitable alternative to proprietary systems to supplement teaching.

Several books have been written about Odoo, some covering specific areas such as accounting or development.

Odoo has received awards including Trends Gazelle and BOSSIE Awards three years in a row.

It uses Python scripting and Postgres database. Its community edition is supplemented with an Enterprise edition @ USD 240/- per user per year and a commercially supported online edition. Development repo is on GitHub.

In 2013, the not-for-profit Odoo Community Association was formed to ensure the ongoing promotion and maintenance of the Odoo community versions and modules to supplement the work of Odoo S.A. This organisation has over 150 members who are a mix of individuals and organisations.