Software License Agreement
==========================

**CKEditor&nbsp;5 Premium features** (https://ckeditor.com/ckeditor-5/)<br>
Copyright (c) 2003–2026, [CKSource Holding sp. z o.o.](https://cksource.com) All rights reserved.

CKEditor&nbsp;5 Premium features is licensed under a commercial license and is protected by copyright law.
For more information, see: [https://ckeditor.com/pricing](https://ckeditor.com/pricing).

Sources of Intellectual Property Included in CKEditor&nbsp;5
------------------------------------------------------------

Where not otherwise indicated, all CKEditor&nbsp;5 content is authored by CKSource engineers and consists of CKSource-owned intellectual property.

The following libraries are included in CKEditor&nbsp;5 under the [BSD-2-Clause license](https://opensource.org/licenses/BSD-2-Clause):

* domhandler - Copyright (c) Felix Böhm.
* domutils - Copyright (c) Felix Böhm.

The following libraries are included in CKEditor&nbsp;5 under the [BSD-3-Clause license](https://opensource.org/licenses/BSD-3-Clause):

* diff - Copyright (c) 2009-2015, Kevin Decker <kpdecker@gmail.com>.
* protobufjs - Copyright (c) 2016, Daniel Wirtz  All rights reserved.

The following libraries are included in CKEditor&nbsp;5 under the [MIT license](https://opensource.org/licenses/MIT):

* @codemirror/autocomplete - Copyright (C) 2018-2021 by Marijn Haverbeke <marijn@haverbeke.berlin> and others.
* @codemirror/commands - Copyright (C) 2018-2021 by Marijn Haverbeke <marijn@haverbeke.berlin> and others.
* @codemirror/lang-html - Copyright (C) 2018-2021 by Marijn Haverbeke <marijn@haverbeke.berlin> and others.
* @codemirror/lang-markdown - Copyright (C) 2018-2021 by Marijn Haverbeke <marijn@haverbeke.berlin> and others.
* @codemirror/language - Copyright (C) 2018-2021 by Marijn Haverbeke <marijn@haverbeke.berlin> and others.
* @codemirror/state - Copyright (C) 2018-2021 by Marijn Haverbeke <marijn@haverbeke.berlin> and others.
* @codemirror/theme-one-dark - Copyright (C) 2018-2021 by Marijn Haverbeke <marijn@haverbeke.berlin> and others.
* @codemirror/view - Copyright (C) 2018-2021 by Marijn Haverbeke <marijn@haverbeke.berlin> and others.
* @types/luxon - Copyright (c) Microsoft Corporation.
* @uploadcare/file-uploader - Copyright (c) 2025 Uploadcare (hello@uploadcare.com). All rights reserved.
* @uploadcare/upload-client - Copyright (c) 2019 Uploadcare Inc.
* dom-serializer - Copyright (c) 2014 The cheeriojs contributors.
* es-toolkit - Copyright (c) 2024 Viva Republica, Inc and Copyright OpenJS Foundation and other contributors.
* eventsource-parser - Copyright (c) 2025 Espen Hovlandsdal <espen@hovlandsdal.com>.
* htmlparser2 - Copyright 2010, 2011, Chris Winberry <chris@winberry.net>. All rights reserved.
* luxon - Copyright 2019 JS Foundation and other contributors.
* morphdom - Copyright (c) Patrick Steele-Idem <pnidem@gmail.com> (psteeleidem.com).
* rehype-sanitize - Copyright (c) 2016 Titus Wormer <tituswormer@gmail.com>.
* socket.io-client - Copyright (c) 2014-present Guillermo Rauch and Socket.IO contributors.
* socket.io-parser - Copyright (c) 2014-present Guillermo Rauch and Socket.IO contributors.
* specificity - Copyright (c) 2016 Keegan Street and others.
* url-parse - Copyright (c) 2015 Unshift.io, Arnout Kazemier, the Contributors.
* uuid - Copyright (c) 2010-2020 Robert Kieffer and other contributors.

Trademarks
----------

**CKEditor** is a trademark of [CKSource Holding sp. z o.o.](https://cksource.com) All other brand and product names are trademarks, registered trademarks or service marks of their respective holders.
