ERPNext is an open-source ERP suite from Frappe. It covers accounting, procurement, sales, CRM, stock, manufacturing, projects, assets, point of sale, quality, support and HR and payroll, plus a no-code builder for customising forms, reports and workflows. According to Frappe, all features are available without paywalled tiers. You can implement and run ERPNext yourself on your own infrastructure, or use Frappe Cloud, Frappe's hosting platform, which handles upgrades and backups. Certified partners carry out implementations.
Frappe Technologies Pvt. Ltd. is located in India and is subject to Indian law. Anyone who self-hosts ERPNext chooses the data centre and the jurisdiction, for example a European provider, and keeps the data under their own control. For Frappe Cloud, the privacy policy names no European hosting region: offsite backups are stored in India, and data may be stored in locations across the world. If you choose Frappe Cloud, check the data location beforehand.