OpenInvoice Germany

Free, self-hosted German e-invoicing software — XRechnung/ZUGFeRD, GoBD, and §19 compliant.

WebfreeGermany

OpenInvoice Germany is a free, self-hostable, open-source invoicing tool built specifically for German tax compliance. It generates XRechnung and ZUGFeRD e-invoices, enforces GoBD recordkeeping and mandatory invoice fields, and supports the Kleinunternehmer small-business regime. It's aimed at German freelancers and small businesses who want to meet e-invoicing rules without a subscription tool.

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