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Fortlauf
Fortlauf is the e-invoicing API for German rules. Software teams issue, validate and archive XRechnung & ZUGFeRD invoices (EN 16931) through one API — KoSIT validation reports included, every document in an immutable, hash-chained archive. Built for platforms and SaaS that invoice on behalf of their customers, running end to end on our own hardware in Munich. Free sandbox, no card.
SoftwarePre-seedGermany
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