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.
crmerpenterprise
51.7K32.6KLGPL-3.0
vs SAP
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.
erpbusinessfinance
35.2K11.5KGPL-3.0
vs SAP