Best Open Source Alternatives to SAP ERP

Compare the best free and open-source alternatives to SAP ERP — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated November 2026 · 2 alternatives

SAP ERP

Proprietary SaaS

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Platformsweb, desktop, mobile

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SAP ERP alternatives compared

Open-source alternatives to SAP ERP, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Odoo Community	55,501	LGPL-3.0	LinuxmacOSWindowsDocker	Yes	Nov 2026	Visit
Open Mercato	1,899	MIT	Web	No	Nov 2026	Visit

Top open-source SAP ERP alternatives

Odoo Community55,501LGPL-3.0

Odoo Community is an open-source ERP replacing Odoo Enterprise and NetSuite with self-hosted inventory, CRM, sales, and modular business apps.

LinuxmacOSWindowsDockerWeb

vs SAP ERP: a free, open-source option you fully control, licensed LGPL-3.0.

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Open Mercato1,899MIT

Open-source TypeScript framework for custom CRM and ERP apps, replacing SAP ERP and Retool with self-hosted modular code and KMS field encryption.

Web

vs SAP ERP: a free, open-source option you fully control, licensed MIT.

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Best Open Source Alternatives to SAP ERP

SAP ERP

SAP ERP alternatives compared

Top open-source SAP ERP alternatives

The modern standard for Protobuf workflows

Mentoring for backend developers. Consulting for startups.