Odoo
Modular open-source ERP — CRM, accounting, inventory, eCommerce, and 30+ business apps.
LGPL-3.0 alternative to SAP and NetSuite. Self-host the Community Edition or use Odoo Cloud — integrated apps for sales, operations, finance, and HR.
ERPNext
Full-featured open-source ERP — accounting, inventory, HR, CRM.
GPL-3.0 alternative to SAP and Odoo. Double-entry bookkeeping, batch tracking, BOM, payroll, and lead management. Python/React stack with MariaDB.
Compare Oracle alternatives
Oracle's enterprise software line — including Oracle ERP Cloud and Oracle Database-backed business applications — is proprietary, licensed per user or per processor, and known for complex, expensive licensing agreements and long implementation cycles. That cost and lock-in is exactly why many mid-size companies look for open-source ERP options.
Odoo is the broader modular suite if you want CRM, accounting, and inventory in one open-source platform. ERPNext is worth comparing if you want a more traditional, fully open-source (GPL) ERP core without Odoo's mix of community and paid enterprise modules.
FAQ
Is there a free, open-source alternative to Oracle's business applications?
Yes. Odoo (LGPL-3.0) and ERPNext (GPL-3.0) are both open source and free to self-host, without Oracle's per-processor licensing.
What's the best open-source alternative to Oracle's ERP software?
Odoo has the broadest app ecosystem — CRM, accounting, inventory, and more as modular add-ons. ERPNext is the better pick if you want the entire platform, not just the community edition, to stay fully open source.
What are the top open-source alternatives to Oracle?
Browse all open-source alternatives to Oracle above, or explore the full Business & Finance category for more options.