e-invoice-eu

🇪🇺 Generate e-invoices (E-Rechnung in German) conforming to EN16931 (Factur-X/ZUGFeRD, UBL, CII, XRechnung aka X-Rechnung) from LibreOffice Calc/Excel data or JSON. Maintained by gflohr on GitHub, where it has earned 200 stars from the community.

It's actively developed around cii, e-invoice, e-rechnung, and is a solid reference for anyone building with these tools.