Open-Source Business Apps (ERP/CRM)
Self-hostable ERP, CRM, and business suites — run your company's back office on open source.
alternatives (3)
★ ERPNext
Best for: Whole-business back office
Full open-source ERP — accounting, inventory, HR, manufacturing, projects, and CRM in one suite.
- +Covers most business ops
- +Active community
- +Self-host or cloud
- −Lots to configure
Twenty
Best for: Sales & contacts
Modern open-source CRM — a clean Salesforce/HubSpot alternative for managing contacts and deals.
- +Modern UX
- +Open source
- +Fast-moving
- −Younger than incumbents
Odoo
Best for: All-in-one modular suite
Modular open-core suite — CRM, accounting, e-commerce, inventory, and more as apps you enable.
- +Huge module range
- +Polished
- +Big ecosystem
- −Many features are paid
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Run your business on open source. ERPNext is a complete ERP (accounting, inventory, HR, manufacturing), Twenty is a modern open CRM, and Odoo is a modular suite where you enable just the apps you need. Compare by scope and license, and remember you can self-host any of them.