OpenXRechnungToolbox vs Quba-viewer
OpenXRechnungToolbox and Quba-viewer are both e-invoicing library software. OpenXRechnungToolbox is open source under GPL-3.0, with 64 GitHub stars. Quba-viewer is open source under Apache-2.0, with 206 GitHub stars.
Which to pick
- Pick OpenXRechnungToolbox when
- A German organisation needs to view and validate XRechnung files locally without programming.
- Pick Quba-viewer when
- Someone in accounts receives XML e-invoices and needs to read and check them locally.
Side by side
A desktop and command-line tool that displays and validates XRechnung and Peppol invoices, converts CII to UBL, and calculates Leitweg-ID check digits.
A desktop viewer for electronic invoices such as ZUGFeRD, XRechnung and UBL that renders them readably and checks them.
The README says development is paused, so newer XRechnung versions may not be supported.
A small project, and its documentation is partly copied from the ZUGFeRD-Manager it is based on.
Usable (both)
Desktop app and command line
Desktop app
Java and XSLT
Kotlin, Java and XSLT
Open source, GPL-3.0 (strong copyleft)
Open source, Apache-2.0 (permissive)
Use inside your business is unrestricted, but anything you distribute that includes it must be released under the same license.
You can build it into a product you sell, as long as you keep its copyright notice.
64 GitHub stars
206 GitHub stars
Established: started 6 years ago, latest release 2024-10-05-3.0.0.
Established: started 5 years ago, latest release 2.0.0.
Other comparisons
More e-invoicing libraries for ZUGFeRD, Factur-X, XRechnung and Peppol
Both sides were judged on 2026-11-03 from each project's README and GitHub data. License, age and popularity lines are worked out directly.