Odoo — Open Source Business Apps & ERP Suite

Introduction

Odoo is a comprehensive suite of open-source business applications that covers every company need: CRM, e-commerce, accounting, inventory, point of sale, project management, and more. Its modular design lets organizations start with one app and expand as they grow, all from a single integrated platform.

What Odoo Does

• Provides 30+ fully integrated business apps out of the box
• Manages sales pipelines, customer relationships, and lead tracking via CRM
• Handles double-entry accounting, invoicing, and bank reconciliation
• Runs warehouse management with barcode scanning and multi-location inventory
• Powers e-commerce storefronts connected to inventory and payment gateways

Architecture Overview

Odoo follows a three-tier architecture: a PostgreSQL database for persistence, a Python-based server (using Werkzeug) that handles ORM operations and business logic, and a JavaScript frontend built on its own OWL framework. Modules are self-contained directories with models, views, and controllers that register into the core registry at startup.

Self-Hosting & Configuration

• Requires Python 3.10+ and PostgreSQL 12+ as the backing database
• Configure via odoo.conf for database host, admin password, addons path, and workers
• Deploy with Docker using the official odoo image paired with a postgres container
• Set --workers and --max-cron-threads for production concurrency tuning
• Use a reverse proxy like Nginx for SSL termination and static asset serving

Key Features

• Modular app store with thousands of community and enterprise add-ons
• Built-in website builder and e-commerce with SEO tools
• Unified data model across all apps eliminates integration headaches
• Studio app allows no-code customization of forms, views, and automations
• Multi-company and multi-currency support for international operations

Comparison with Similar Tools

• ERPNext — Python-based ERP with strong manufacturing focus; fewer built-in apps but simpler setup
• SAP Business One — Enterprise ERP with deep industry modules; proprietary and significantly more expensive
• Dolibarr — Lighter PHP-based ERP/CRM; fewer features but lower resource requirements
• Tryton — Python ERP framework prioritizing modularity; smaller community and ecosystem
• iDempiere — Java-based community ERP forked from Compiere; steeper learning curve

FAQ

Q: Is Odoo truly free and open source? A: The Community Edition is LGPL-licensed and fully open source. The Enterprise Edition adds proprietary modules on top and requires a subscription.

Q: How many users can a self-hosted Odoo instance handle? A: With proper worker configuration and PostgreSQL tuning, a single server can comfortably serve hundreds of concurrent users. Larger deployments use load balancers.

Q: Can I migrate from Odoo Community to Enterprise? A: Yes. Enterprise is an overlay on Community, so you can upgrade by installing Enterprise modules on top of your existing database.

Q: How do I install custom or third-party modules? A: Place the module directory in your addons path, update the app list from Settings, and install it from the Apps menu.

Sources

• https://github.com/odoo/odoo
• https://www.odoo.com/documentation