ZUGFeRD-csharp

Judgement

What it is

Building block

What it does

A C# library for creating and reading ZUGFeRD, Factur-X and XRechnung invoices.

Adopt it when

Only for existing .NET projects that need a short bridge; new work should look elsewhere.

Watch out

Maintenance ends on 30 November 2026, after which the repo is archived and development moves to the commercial FactoorSharp.

Ready for

Production-ready

Runs as

Library

Built with

C# and .NET

How established

Established: started 13 years ago, latest release 18.0.1.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: ZUGFeRD-csharp → Runtime → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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