FAQ

This website contains links to software which is either no longer maintained or will be supported only until the end of 2019 (CKFinder 2). For the latest documentation about current CKSource projects, including software like CKEditor 4/CKEditor 5, CKFinder 3, Cloud Services, Letters, Accessibility Checker, please visit the new documentation website.

If you look for an information about very old versions of CKEditor, FCKeditor and CKFinder check also the CKEditor forum, which was closed in 2015. If not, please head to StackOverflow for support.

Frequently Asked Questions

In this page you can find Frequently Asked Questions (and answers) about FCKeditor. Please do not use this page just for asking questions. For support and discussion questions I invite you to go to our Forums.

  • [FAQ#commercial: Can I use FCKeditor...]
Can I use FCKeditor in my commercial software? Must my software be Open Source too?

The editor is licensed under the Open Source GPL, LGPL and MPL licenses making it possible to use it with almost all kinds of software. If these Open Source licenses terms satisfy your needs, you can freely use FCKeditor in your commercial software. You may use any GPL, LGPL or MPL compatible license you want for your software, and it is not mandatory for it to be Open Source or Free Software.

Even if it is free to use FCKeditor, consider giving something back to the project, mainly when using it on commercial software. In this way you can help us maintain the project and the high quality of the editor. It is also the only way for us to compete with commercial editors. Take a look at our commercial license and the e-mail support for some options.

For many companies and products, Open Source licenses or the donation mechanism is not an option. This is why the Closed Distribution License has been introduced: http://www.fckeditor.net/license/commercial