Open Source Java e-Invoicing library, validator and tool (Factur-X/ZUGFeRD, UNCEFACT/CII XRechnung)

Validation artefacts for the European eInvoicing standard EN 16931

Quba is a viewer for electronic invoices

XSL transformators for web and pdf rendering of German CIUS XRechnung or EN16931-1:2017 [MIRROR OF GitLab]

The European Single Procurement Document enables accelerated processing of preliminary evidence in EU public procurement. The ESPD EDM enables applications to integrate with national ESPD service providers.

Codelistenauflösung für die Visualisierung von XRechnung || Engl.: Resolving codelists for XRechnung-Visualization