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Open-source alternatives · curated shortlist

Open-source alternatives
to NetSuite & SAP.

The closest open-source alternatives to NetSuite and SAP are ERPNext, Odoo, iDempiere, and metasfresh. ERPNext is the fastest to deploy for mid-market; Odoo has the largest app ecosystem; iDempiere suits complex enterprise workflows; metasfresh fits wholesale and distribution. All four are self-hostable with no license fees.

Companies leave NetSuite and SAP over six-figure licenses, per-user fees, and upgrade projects that take quarters. Open ERP removes license cost entirely — budget goes to implementation instead of rent. Be realistic: a serious ERP rollout still needs consultants and months, whichever license you pick.

#ProjectStarsLicenseStack
1odooLargest open-source app ecosystem; community edition is LGPL.55.7Kundeclared — verifyPython
2erpnextFull ERP with accounting, stock, HR, and CRM; fastest mid-market path.41.2KGPL-3.0Python
9metasfreshWholesale and distribution workflows with fast document processing.2.5Kundeclared — verifyJava
17idempiereCommunity ERP for complex manufacturing and distribution.677undeclared — verifyJava

Ranks and stars from the live chart · updated Nov 12, 2026 · full ERP ranking →

Quick answers

Is there a free alternative to NetSuite & SAP?
Yes. odoo, erpnext, metasfresh, idempiere are all open-source alternatives to NetSuite & SAP with no license fees — you pay only for hosting. Differences are in maturity, features, and implementation effort, compared below.
Can I self-host a NetSuite & SAP alternative?
Yes — every option on this page is self-hostable. Deployment ranges from one-command Docker to managed setup; check each project's docs for requirements.
How were these NetSuite & SAP alternatives chosen?
From the live Open-Source ERP Systems, Ranked by GitHub Stars ranking, shortlisted by human curation. Rankings on maal.top are never sold. See the full chart for the complete list.