Odoo

Odoo

★ 54,34433,692 forks33,692 contributorsUpdated 9/14/2026

Odoo is an open-source, modular business suite licensed under LGPLv3, and a self-hosted alternative to SAP, NetSuite, and Salesforce. Its Community Edition covers CRM, accounting, inventory, manufacturing, HR, and e-commerce as installable apps that share one database, so businesses can start with one module and add more as they grow.


Overview

Description

Odoo is an open-source, modular business suite, and a self-hosted alternative to SAP, NetSuite, and Salesforce. The Community Edition ships dozens of installable apps — CRM, sales, accounting, inventory, manufacturing (MRP), HR, project management, and e-commerce — that all share one underlying database and a consistent framework, so records like customers and products flow between apps without integration work. Businesses typically start with one or two modules (CRM, invoicing) and add more over time rather than adopting an entire ERP suite at once. Odoo's own ORM, workflow engine, and OWL-based UI framework make custom modules straightforward to build for developers who need functionality the core apps don't cover.

Features

  • Modular apps: CRM, sales, accounting, inventory, manufacturing, HR, and e-commerce on one database.
  • Unified data model: Customers, products, and stock move between apps without separate integrations.
  • Workflow automation: Built-in automation rules, approvals, and scheduled actions per app.
  • Customization framework: Python ORM, XML views, and the OWL JS framework for custom modules.
  • Multi-company & multi-currency: Manage several companies and currencies from one instance.
  • App store: Thousands of community and third-party modules to extend core functionality.

Technology Stack

  • Python backend with a custom ORM
  • PostgreSQL database
  • JavaScript / OWL frontend framework
  • Docker images and native Debian/RPM packages

Requirements

  • Python 3.10+ and PostgreSQL 13+
  • Linux server (Docker or native install)
  • wkhtmltopdf for PDF report generation

Learning resources

Odoo - Open Source SaaS Alternative