Odoo is an open-source business management platform that brings CRM, sales, accounting, inventory, HR, manufacturing, and eCommerce into one connected system. You install only the apps you need, then add more as your business grows. All modules share the same database, so a sales order automatically updates inventory, invoicing, and financial records.

• Modular App System: Install only the apps you need across CRM, sales, accounting, inventory, HR, manufacturing, marketing, and more. Add modules as your business grows.
• Centralized Database: All apps share one database, so confirming a sale automatically updates inventory, generates invoices, and syncs financial records in real time.
• Open-Source Community Edition: Access the free LGPL-v3 licensed version with core ERP modules, full source code access, and self-hosting options.
• Odoo Studio Low-Code Builder: Build custom apps, forms, and workflows without deep coding knowledge using drag-and-drop tools (Custom plan only).
• Multi-Company Support: Manage several companies inside a single database with user-level access controls and permission rules.
• Flexible Deployment: Choose between Odoo Online (SaaS), Odoo.sh (managed cloud with staging branches), or on-premise hosting.
• Mobile Apps: Native Android and iOS apps let staff access data, approve requests, and manage operations on the go.

• Tight Integration Between Apps: Users consistently praise how quoting, invoicing, inventory, and email marketing connect in one place, cutting out duplicate data entry.
• Highly Customizable: Businesses can customize workflows using the open-source Community Edition, Odoo Studio, custom modules, and thousands of community and partner-built apps available through the Odoo Apps Store.
• All-in-One Coverage: One platform replaces separate CRM, accounting, HR, and eCommerce tools, reducing software sprawl and licensing costs.
• Scales From Startup to Enterprise: Start with a single application and add more as your business grows, making Odoo suitable for small businesses as well as large organizations.

• Steep Learning Curve: New users without ERP experience often find onboarding overwhelming, and configuring workflows or module interactions typically requires time or external help.
• Customization Costs Can Increase Quickly: While Odoo is flexible, advanced customizations, third-party apps, developer work, and implementation services can add significant costs beyond the subscription price.
• Customization Often Requires Technical Expertise: Simple changes can be handled with built-in tools, but complex workflows and integrations may require Odoo developers or implementation partners. The quality and experience of partners can affect project timelines and budgets.

• Small Business All-in-One Setup: A growing shop replaces separate tools for CRM, invoicing, and inventory with one Odoo instance. Sales orders automatically update stock levels and generate invoices, saving hours of manual reconciliation each week.
• eCommerce and Retail Operations: An online retailer runs the Website, eCommerce, Inventory, and POS apps together. Online orders, in-store sales, and warehouse stock stay in sync across every channel in real time.
• Manufacturing and Supply Chain: A manufacturer uses Manufacturing, Purchase, Inventory, and Quality apps to plan production runs, manage BOMs, track raw materials, and enforce quality checks on the shop floor.
• Professional Services Firm: A consulting agency combines CRM, Projects, Timesheets, and Invoicing to track leads, deliver projects, log billable hours, and bill clients directly from tracked time.
• Multi-Company Group Management: A holding company manages several legal entities in one database, with shared customers and vendors, consolidated reporting, and separate accounting per subsidiary.
• HR and Recruitment Workflows: An HR team uses Recruitment, Employees, Time Off, and Appraisals apps to post jobs, screen candidates, onboard hires, and run performance reviews from one dashboard.