Zum Werkzeug

Lizenzen

Was Rechnungstools von anderen verwendet, und unter welchen Lizenzen.

Die offiziellen Prüfregeln

Geprüft wird mit den offiziellen Regeln. Die XRechnung-Regeln und die Prüfkonfiguration stammen von der Koordinierungsstelle für IT-Standards (KoSIT) und stehen unter der Apache License 2.0. Die Regeln der EN 16931 stammen vom Europäischen Komitee für Normung (CEN/TC 434) und stehen unter der European Union Public Licence 1.2.

Zwei Dateien der KoSIT haben wir angepasst, damit sie im Browser laufen: Aus der Vorlage für den Prüfbericht haben wir einen Teil entfernt, den SaxonJS nicht übersetzen kann, und die IBAN-Prüfung rechnet mit Dezimalzahlen, weil SaxonJS sehr große ganze Zahlen ungenau rechnet. Alle anderen Regeln verwenden wir unverändert.

Den Quellcode der Regeln gibt es bei ihren Herausgebern, in der Fassung, die wir verwenden:

SaxonJS

Die Prüfregeln laufen in SaxonJS 2.7 von Saxonica Ltd. Wir liefern es unverändert aus. Seine Lizenz mit Urheberhinweis und Haftungsausschluss im Wortlaut:

Version 1.0, June 2020

Software: This license applies to the packages "xslt3" and "saxon-js" distributed via npm (https://www.npmjs.com) and to the modules SaxonJS2.js and SaxonJS2.rt.js available for download from the Saxonica web site (https://www.saxonica.com/).

Copyright: The copyright in the Software belongs to Saxonica Ltd, except for third-party components listed in the documentation that are distributed under license.

Binary form: In this license, "binary form" means the form in which the Software is issued (this is technically a set of obfuscated Javascript files).

Deployment and use. The Software may be copied to any computer where the primary purpose is the execution of the software on that computer, or on connected client computers.

Redistribution. Redistribution in binary form, without modification, is permitted as part of an application that makes use of the Software, provided that the following conditions are met:

1) Redistributions must reproduce the above copyright notice and the following disclaimer in the documentation and/or other materials provided with the distribution.

2) Except to the extent explicitly permitted by law, no reverse engineering, decompilation, or disassembly of this software is permitted.

3) Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

4) Copying the software to a site whose primary purpose is to make it available to third parties is not permitted without specific prior written permission.

If you institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the software itself infringes your patent(s), then your rights granted under this license shall terminate as of the date such litigation is filed.

DISCLAIMER. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS." ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Schriften

Die PDFs, die hier entstehen, sind in Inter gesetzt (Copyright 2016 The Inter Project Authors), die Seite selbst in Geist und Geist Mono (Copyright 2024 The Geist Project Authors). Alle drei stehen unter der SIL Open Font License 1.1.

Bibliotheken

Diese Bibliotheken laufen in der Seite, in ihren Workern oder auf dem Server, der sie ausliefert. Liste und Lizenztexte entstehen automatisch aus den installierten Paketen. Apache 2.0 steht oben bei den Prüfregeln.

Bibliotheken, die diese Seite verwendet, mit Fassung, Lizenz und Urheber
BibliothekFassungLizenzUrheber
@babel/runtime7.29.7MITCopyright (c) 2014-present Sebastian McKenzie and other contributors
@base-ui/react1.8.0MITCopyright (c) 2019 Material-UI SAS
@base-ui/utils0.4.0MITCopyright (c) 2019 Material-UI SAS
@cantoo/pdf-lib2.11.1MITCopyright (c) 2019 Andrew Dillon
@date-fns/tz1.5.0MITCopyright © 2024 Sasha Koss
@floating-ui/core1.8.0MITCopyright (c) 2021-present Floating UI contributors
@floating-ui/dom1.8.0MITCopyright (c) 2021-present Floating UI contributors
@floating-ui/react-dom2.1.9MITCopyright (c) 2021-present Floating UI contributors
@floating-ui/utils0.2.12MITCopyright (c) 2021-present Floating UI contributors
@jridgewell/sourcemap-codec1.6.0MITCopyright 2024 Justin Ridgewell <justin@ridgewell.name>
@next/env16.3.8MITNext.js Team
@noble/ciphers1.3.0MITCopyright (c) 2022 Paul Miller (https://paulmillr.com)
@noble/hashes1.8.0MITCopyright (c) 2022 Paul Miller (https://paulmillr.com)
@opentelemetry/api1.9.1Apache-2.0OpenTelemetry Authors
@oxc-project/types0.152.0MITCopyright (c) 2024-present VoidZero Inc. & Contributors
@rollup/plugin-commonjs28.0.1MITCopyright (c) 2019 RollupJS Plugin Contributors (https://github.com/rollup/plugins/graphs/contributors)
@rollup/pluginutils5.4.0MITCopyright (c) 2019 RollupJS Plugin Contributors (https://github.com/rollup/plugins/graphs/contributors)
@sentry/browser11.2.0MITCopyright (c) 2019 Functional Software, Inc. dba Sentry
@sentry/browser-utils11.2.0MITCopyright (c) 2020 Functional Software, Inc. dba Sentry
@sentry/bun11.2.0MITCopyright (c) 2023 Functional Software, Inc. dba Sentry
@sentry/bundler-plugins11.2.0MITCopyright (c) 2022-2026, Sentry
@sentry/conventions0.24.0MITCopyright (c) 2023-2025 Functional Software, Inc. dba Sentry
@sentry/core11.2.0MITCopyright (c) 2019 Functional Software, Inc. dba Sentry
@sentry/feedback11.2.0MITCopyright (c) 2023 Functional Software, Inc. dba Sentry
@sentry/nextjs11.2.0MITCopyright (c) 2021 Functional Software, Inc. dba Sentry
@sentry/node11.2.0MITCopyright (c) 2023 Functional Software, Inc. dba Sentry
@sentry/opentelemetry11.2.0MITCopyright (c) 2023 Functional Software, Inc. dba Sentry
@sentry/react11.2.0MITCopyright (c) 2019 Functional Software, Inc. dba Sentry
@sentry/replay11.2.0MITCopyright (c) 2022 Functional Software, Inc. dba Sentry
@sentry/replay-canvas11.2.0MITCopyright (c) 2024 Functional Software, Inc. dba Sentry
@sentry/server-runtime-injection11.2.0MITSentry
@sentry/server-utils11.2.0MITSentry
@sentry/vercel-edge11.2.0MITCopyright (c) 2023 Functional Software, Inc. dba Sentry
@swc/helpers0.5.23Apache-2.0Copyright 2024 SWC contributors.
@types/estree1.0.9MITohne Angabe
@xmldom/xmldom0.9.12MITCopyright 2019 - present Christopher J. Brody and other contributors, as listed in: https://github.com/xmldom/xmldom/graphs/contributors
balanced-match4.0.4MITohne Angabe
base64-js0.0.8MITT. Jameson Little
base64-js1.5.1MITCopyright (c) 2014 Jameson Little
baseline-browser-mapping2.11.26Apache-2.0ohne Angabe
brace-expansion5.0.12MITohne Angabe
brotli1.3.3MITDevon Govett
caniuse-lite1.0.30001812CC-BY-4.0Ben Briggs
class-variance-authority0.7.1Apache-2.0Copyright 2022 Joe Bell
client-only0.0.1MITohne Angabe
clone2.1.2MITCopyright © 2011-2015 Paul Vorbach <paul@vorba.ch>
clsx2.1.1MITLuke Edwards
cn0.4.0MITCopyright (c) 2026 shadcn
commondir1.0.1MITCopyright (c) 2013 James Halliday (mail@substack.net)
culori4.0.2MITCopyright (c) 2018 Dan Burzo
date-fns4.4.0MITCopyright (c) 2021 Sasha Koss and Lesha Koss https://kossnocorp.mit-license.org
dfa1.2.0MITDevon Govett
dotenv17.4.2BSD-2-ClauseCopyright (c) 2015, Scott Motte
estree-walker2.0.2MITCopyright (c) 2015-20 [these people](https://github.com/Rich-Harris/estree-walker/graphs/contributors)
fast-deep-equal3.1.3MITCopyright (c) 2017 Evgeny Poberezkin
fdir6.5.0MITCopyright 2023 Abdullah Atta
fflate0.8.3MITCopyright (c) 2026 Arjun Barrett
fontkit2.0.4MITDevon Govett
glob13.0.6BlueOak-1.0.0Isaac Z. Schlueter
has-flag4.0.0MITSindre Sorhus
html-entities2.6.0MITCopyright (c) 2021 Dulin Marat
is-reference1.2.1MITRich Harris
libxml2-wasm0.7.2MITCopyright (c) 2023 James Lan
linebreak1.1.0MITCopyright (c) 2014-present Devon Govett
lru-cache11.5.3BlueOak-1.0.0Isaac Z. Schlueter
lucide-react1.49.0ISCCopyright (c) 2026 Lucide Icons and Contributors
magic-string0.30.21MITCopyright 2018 Rich Harris
magic-string1.4.2MITCopyright 2018 Rich Harris
minimatch10.2.6BlueOak-1.0.0Isaac Z. Schlueter
minipass7.1.3BlueOak-1.0.0Isaac Z. Schlueter
nanoid3.3.19MITCopyright 2017 Andrey Sitnik <andrey@sitnik.ru>
next16.3.8MITCopyright (c) 2025 Vercel, Inc.
node-html-better-parser1.5.9MITCopyright 2019 Tao Qiufeng
oxc-parser0.152.0MITCopyright (c) 2024-present VoidZero Inc. & Contributors
pako0.2.9MITCopyright (C) 2014-2016 by Vitaly Puzrin
path-scurry2.0.2BlueOak-1.0.0Isaac Z. Schlueter
pdfjs-dist6.4.299Apache-2.0ohne Angabe
pdfkit0.20.2MITCopyright (c) 2014 Devon Govett
picocolors1.1.1ISCCopyright (c) 2021-2024 Oleksii Raspopov, Kostiantyn Denysov, Anton Verinov
picomatch4.0.7MITCopyright (c) 2017-present, Jon Schlinkert.
png-js2.0.0ohne AngabeCopyright (c) 2017 Devon Govett
postcss8.5.23MITCopyright 2013 Andrey Sitnik <andrey@sitnik.es>
react19.3.0MITohne Angabe
react-day-picker10.0.2MITCopyright (c) 2014-2026 Giampaolo Bellavite <io@gpbl.dev> and contributors
react-dom19.3.0MITohne Angabe
reselect5.3.0MITCopyright (c) 2015-2018 Reselect Contributors
restructure3.0.2MITCopyright (c) 2015-present Devon Govett
rollup4.63.5MITCopyright (c) 2017 [these people](https://github.com/rollup/rollup/graphs/contributors)
scheduler0.28.0MITohne Angabe
sentry0.45.0FSL-1.1-Apache-2.0Copyright 2025 Functional Software, Inc. dba Sentry
shadcn4.21.1MITCopyright (c) 2023 shadcn
source-map-js1.2.1BSD-3-ClauseCopyright (c) 2009-2011, Mozilla Foundation and contributors
stacktrace-parser0.1.11MITCopyright (c) 2014-2019 Georg Tavonius
styled-jsx5.1.6MITCopyright (c) 2016-present Vercel, Inc.
supports-color8.1.1MITSindre Sorhus
tiny-inflate1.0.3MITCopyright (c) 2015-present Devon Govett
tslib2.8.10BSDMicrosoft Corp.
tw-animate-css1.4.0MITCopyright (c) 2025 Wombosvideo
type-fest0.7.1(MIT OR CC0-1.0)Sindre Sorhus
unicode-properties1.4.1MITCopyright 2018
unicode-trie2.0.0MITCopyright 2018
uqr0.1.3MITCopyright (c) 2023 Anthony Fu <https://github.com/antfu>
use-sync-external-store1.7.0MITohne Angabe
web-vitals6.2.2Apache-2.0Copyright 2020 Google LLC
zod4.6.5MITCopyright (c) 2025 Colin McDonnell