Quba is a
Open-source / Free / Cross-Platform
Viewer for electronic invoices
We are Quba
Mustang's focusses on the creation, validation and parsing of electronic invoices. Validation also re-calculates important parts of these invoices. Quba covers the visual display for manual checks.
Discussion proposal mandatory german B2B-e-invoices as of 2025
In a Workshop on 2023-04-20./21. it was briefly mentioned, that Germany had requested permission to introduce mandatory domestic B2B-e-invoicing already in November 2022 and a
This version switches to the latest Mustangserver for invoice validation and updates Electron, allowing Quba to run on more recent Mac OS operating systems.
Version 1.1.5 of the open-source e-invoice-viewer Quba, released 2022-08-18, now also supports embedded invoice accompanying files >6MB.
Quba 1.1.2 has been released today, 11 November 2021, and adds support to drag&drop invoices onto the main screen.
Quba 0.5 with support for PDF and Factur-X/ZUGFeRD
With todays’ (2021-07-27) version 0.5 of Quba PDF-files can be opened. If the PDF file additionally contains embedded XML like Factur-X/ZUGFeRD-invoices do, a second tab
What about the name? Apart from being the name of a city in Azerbaijan, it also is the name of the horse breed originating from there. This name, like other horse names (Konic, Mustang) is a homage to the initiator of Factur-X / ZUGFeRD, the Forum of the Electronic Invoice Germany (“FeRD”, an accoustic allusion to the German word for horse).
Thank you for your support with the development of version 1.0
From now on community support and news are available via the ZUGFeRD Google Group.