Software License Agreement
Copyright (c) 2003-2024, CKSource Holding sp. z o.o.. All rights reserved.
We are proud to be Open Source.
CKEditor 5
CKEditor is dual-licensed. This means we make it available under a choice between an open source and a commercial license.
Open Source License
The open source distribution of CKEditor is licensed under the terms of GPL 2+. If you plan to use CKEditor under this license, you can register your application using the CKEditor GPL 2+ license registration form.
If you are running an open source project with an OSS license incompatible with GPL please contact us – we will be happy to support your project with a CKEditor 5 open source license that works for you.
Note: the CKEditor Free Plan is licensed under the GPL 2+ license.
Commercial License
The commercial license unlocks many benefits:
- No GPL restrictions
- Self-hosted CKEditor
- Additionally paid Premium features such as:
- Asynchronous and Real-Time Collaboration
- Import from Word
- Export to Word
- Export to PDF
- Multi-level Lists
- Advanced Productivity
- Advanced Page Management
- AI Assistant
- CKBox for file storage and management
- White-labeling
- Technical Support
Visit the CKEditor Pricing page to find out more or start the 14-day free trial.
CKEditor 4
As announced in 2018, CKEditor 4 reached its End of Life (EOL) in June 2023.
A special edition, CKEditor 4 LTS (Long Term Support), is available under commercial terms (Extended Support Model Package) for anyone looking to extend the coverage of security updates and critical bug fixes. Learn more here or contact us to obtain a commercial license.
CKEditor 4 LTS (Long Term Support, 4.23.0 and above) is available under exclusive terms of the Extended Support Model Package.
CKEditor 4 Open-Source edition (4.22.* and below) is licensed under the terms of any of the following licenses at your choice:
Sources of Intellectual Property Included in CKEditor
Where not otherwise indicated, all CKEditor content is authored by CKSource engineers and consists of CKSource-owned intellectual property. In some specific instances, CKEditor will incorporate work done by developers outside of CKSource with their express permission.
Trademarks
CKEditor is a trademark of CKSource Holding sp. z o.o. All other brand and product names are trademarks, registered trademarks or service marks of their respective holders.