====== Links zu ERP X-Rechnung etc ======

===== ERP CRM Accounting =====
  * Kivitendo
  * Odoo
  * https://akaunting.com/features

=====  X-Rechnung bzw. Zugferd  =====
  * https://quba-viewer.org/
  * https://github.com/OpenIndex/ZUGFeRD-Manager
  * https://github.com/muonIT/invoicex-gui