Quba-viewer vs ZUGFeRD-Manager
Quba-viewer and ZUGFeRD-Manager are both e-invoicing library software. Quba-viewer is open source under Apache-2.0, with 206 GitHub stars. ZUGFeRD-Manager is open source under Apache-2.0, with 39 GitHub stars.
Which to pick
- Pick Quba-viewer when
- Someone in accounts receives XML e-invoices and needs to read and check them locally.
- Pick ZUGFeRD-Manager when
- A small German business wants to check or produce ZUGFeRD invoices without uploading them anywhere.
Side by side
A desktop viewer for electronic invoices such as ZUGFeRD, XRechnung and UBL that renders them readably and checks them.
A free desktop app for Windows, macOS and Linux that creates and validates ZUGFeRD e-invoices.
A small project, and its documentation is partly copied from the ZUGFeRD-Manager it is based on.
No push since June 2025, and work appears to continue in the Quba viewer instead.
Usable (both)
Desktop app (both)
Kotlin, Java and XSLT
Kotlin and Java
Open source, Apache-2.0 (permissive) (both)
You can build it into a product you sell, as long as you keep its copyright notice. (both)
206 GitHub stars
39 GitHub stars
Established: started 5 years ago, latest release 2.0.0.
Young: started 23 months ago, latest release v1.3.2.
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.