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.
Qgoda (pronounce: yagoda!) is an extensible static site generator with arbitrary taxonomies and cross-links and a strong focus on multilanguage facilities.