Odoo is a free, open source erp & operations project written in Python and released under a custom open-source licence. It has 54,424 GitHub stars, 33,741 forks and 10,282 open issues, and was last pushed 5 hours ago. On this registry it ranks #1 of 25 tracked projects in ERP & Operations, and is listed as an open source replacement for 1 paid product, with 5 head-to-head comparisons available. It gained 110 stars over the last 6 tracked days.

Odoo — All-in-one business platform covering ERP, CRM, and more

What is Odoo?

What it is

Odoo is an open-source suite of business applications built as modular web apps, forming a full-featured ERP when combined. It lives in the Python-based ecosystem and provides pre-built modules for core business functions including CRM, accounting, inventory, e-commerce, and HR, all sharing a unified data model and interface.

It solves the problem of fragmented or proprietary business software by offering integrated, customizable apps that eliminate data silos and reduce licensing costs. Users avoid vendor lock-in and can extend functionality via community or custom modules without requiring deep rewrites.

Key capabilities

  • Unified database schema across all apps ensures real-time data consistency between sales, inventory, and accounting
  • Drag-and-drop website builder with live preview for creating and editing company websites and online stores
  • Full CRM pipeline management with lead scoring, campaign tracking, and email automation
  • Inventory management with barcode scanning, warehouse routes, and multi-level stock valuation
  • Point of Sale with offline mode, receipt printing, and integration with payment terminals
  • Manufacturing module supporting work orders, BOMs, and capacity planning on shop-floor terminals
  • Role-based access control with granular field-level security rules per user group

Who uses it and how

SMBs deploy Odoo as their primary business OS, installing on-premises or via Odoo.sh to manage sales-to-invoicing workflows end-to-end.
E-commerce retailers use the Website and eCommerce apps to build stores with dynamic product catalogs and integrated payment gateways.
Manufacturers configure the Manufacturing app to schedule production, track work centers, and consume raw materials against job cards.
Service firms combine CRM, Project, and Timesheet apps to manage client engagements, assign tasks, and bill against time records.

Getting started

Install via Docker using odoo:latest image or follow official installation guides for Debian/Ubuntu/CentOS. Odoo.sh provides a hosted deployment option with automatic updates and CI/CD.

When to use it — and when not to

Odoo replaces paid suites like Salesforce or NetSuite for organizations needing integrated apps without per-user licensing fees, but requires self-hosting infrastructure (PostgreSQL, file storage, SMTP) and Python运维 effort. It is unsuitable where strict real-time transaction processing or niche industry-specific compliance (e.g., aerospace traceability) is required, as core modules lack those specialized validations out-of-the-box.

project readme (upstream, from github) — read inline

Odoo

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Odoo is a suite of web based open source business apps.

The main Odoo Apps include an Open Source CRM, Website Builder, eCommerce, Warehouse Management, Project Management, Billing & Accounting, Point of Sale, Human Resources, Marketing, Manufacturing, ...

Odoo Apps can be used as stand-alone applications, but they also integrate seamlessly so you get a full-featured Open Source ERP when you install several Apps.

Getting started with Odoo

For a standard installation please follow the Setup instructions from the documentation.

To learn the software, we recommend the Odoo eLearning, or Scale-up, the business game. Developers can start with the developer tutorials.

Security

If you believe you have found a security issue, check our Responsible Disclosure page for details and get in touch with us via email.

Frequently asked questions

Is Odoo free to use?

Odoo is open source. There is no licence fee and no seat count — you can self-host it or, where the project offers one, pay a vendor for a managed version instead.

What does Odoo do?

All-in-one business platform covering ERP, CRM, and more

What is Odoo written in?

Odoo is primarily written in Python. Its source is publicly available at https://github.com/odoo/odoo, and it has 54,424 GitHub stars.

What is a good open source alternative to HubSpot CRM?

Odoo is one of the open source options listed as an alternative to HubSpot CRM. Compare licences, stars and activity side by side on the Odoo profile.