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.

A set of preconfigured rules for the phive engine

E-Inovice Validator for Germany (E-Rechnung Validator)

A library for PHP to generate and read EN16931 conform structured XML data with the syntaxes of UBL and CII.

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