Odoo
ERPA suite of web-based business apps (CRM, sales, inventory, accounting, HR and more) that you can self-host in a free Community edition or buy as Enterprise.
Open-source alternative to:

What the free edition leaves out
Scroll sideways to view all columns →The free edition is genuinely usable, but some team or enterprise features need a paid plan. “Not confirmed” means the official pages we read did not say, so we do not guess.
| Feature | Free edition | Details | Source |
|---|---|---|---|
| SSO / SAML | Not confirmed | Single sign-on is not described on the pages read, and the editions comparison table has no row for it. | Source ↗ |
| Role-based access control | Free | User groups and access rules are defined in the base module, which is in the LGPL repository. | Source ↗ |
| Audit logs | Not confirmed | Audit logs are not described on the pages read, and the editions comparison table has no row for them. | Source ↗ |
| Multi-user / teams | Free | User accounts are part of the base module in the LGPL repository. | Source ↗ |
| Backups and restore | Not confirmed | The deployment docs mention a database manager screen that should be protected, but backup and restore are not described as part of either edition on the pages read. | Source ↗ |
| API access | Not confirmed | The external API docs say it is not available on the One App Free or Standard hosted plans. They do not say what applies to a self-hosted Community install. | Source ↗ |
| Support SLA | Paid | In the editions comparison table, unlimited functional support has a cross for Community and a check mark for Enterprise. No SLA terms were found. | Source ↗ |
Best for
Small and mid-sized companies that want one integrated set of business apps and are willing to host and maintain it themselves, or to pay for the Enterprise edition.
Why choose it over NetSuite
Odoo Community is LGPL-3.0 and covers CRM, sales, point of sale, inventory, manufacturing, purchase, website, eCommerce, project, HR basics and more, according to the Odoo editions table. You can start with a few apps and add more later.
Where it falls short
The editions table marks many apps as Enterprise only, including full accounting, Studio, Helpdesk, Planning, Field Service, IoT, Knowledge, Payroll, the mobile apps and marketing automation. Version upgrades, hosting and functional support are also listed as Enterprise only. In the Community edition you therefore get basic invoicing and expenses but not the full accounting app. You need to run PostgreSQL and handle updates yourself.
Open-source alternative to
- NetSuite — Odoo covers sales, inventory, accounting and other business apps, which overlaps with NetSuite.