Odoo vs ERPNext: Open-Core vs Fully Open-Source ERP for Manufacturers

Odoo and ERPNext are the two most widely deployed open-source ERP systems for small and mid-size manufacturers. Both cover MRP, BOM, inventory, quality, HR, CRM, and accounting. The fundamental philosophical difference is licensing: Odoo uses an open-core model where only the Community Edition (LGPL-3.0) is truly open; ERPNext is 100% open source (MIT/GPL) with all features available for free.

Feature comparison

Capability	Odoo Community	Odoo Enterprise	ERPNext (all free)
Basic MRP / BOM	Yes	Yes	Yes
Work centres & routings	No	Yes	Yes
Quality checks / SPC	No	Yes	Yes
Barcode / lot tracking	No	Yes	Yes
PLM / ECO	No	Yes	Yes
Preventive maintenance	No	Yes	Yes
Accounting / ledger	Basic invoicing	Full	Full
Payroll	Basic	Yes	Yes
No-code customisation	No	Studio (Custom plan)	Yes (Frappe)
IoT Box (hardware)	No	Yes	No native
frePPLe APS integration	No	Yes (XML-RPC)	No native
Multi-company	No	Custom plan only	Yes
External API	No	Custom plan only	Yes

When to choose Odoo

Your team needs the Odoo IoT Box for plug-and-play hardware integration (scales, barcode printers, sensors) without custom development
You want a large ecosystem of 80+ pre-built apps (eCommerce, POS, HR, Marketing) from a single vendor
You need Odoo Studio for no-code module customisation, or Odoo.sh for Git-based PaaS hosting
You are working with an Odoo-certified implementation partner who has vertical templates
Budget allows for Enterprise subscription (€19.90–€29.90/user/month)

When to choose ERPNext

Total cost of ownership matters most — ERPNext gives all manufacturing features for free, with hosting-only charges
Your team wants 100% open-source freedom without proprietary modules or vendor lock-in
You need subcontracting, job card scanning, or batch manufacturing out of the box without upgrading a plan
You run a larger team where per-user Odoo costs are significant (50 users ≈ €1,000/month Odoo vs ~$50/month ERPNext hosting)
Community support matters — ERPNext's Frappe Forum is extremely active

Can they coexist?

Rarely used together in the same stack. Some organisations run ERPNext for core ERP and Odoo for specific apps (e.g., Odoo eCommerce), but this adds integration complexity. Generally, pick one as your ERP backbone.