Both are open source
Odoo and ERPNext both give you the source code and can run on your own server. The difference is in the ecosystem: Odoo has a much larger app store, more partners worldwide and a more polished interface, while ERPNext is fully free with no paid edition.
Comparison
- Apps: Odoo has 40,000+ apps on its store; ERPNext has far fewer.
- Interface: Odoo is easier for non-technical staff; ERPNext feels more like a database.
- Editions: Odoo has free Community and paid Enterprise; ERPNext has one free edition.
- Partners and talent: Odoo developers and consultants are easier to hire in most countries.
- Localization: both support many countries; Odoo has more ready tax and e-invoicing modules.
Which one to choose
If you want the lowest software cost and have an in-house developer, ERPNext can work. If you want faster rollout, more ready-made modules and easier support, Odoo is usually the safer choice.