enhanced DOM and CSS performance. The server-side implementations were removed. It was retired in June 2023.

CKEditor 4 LTS

A special commercial-only continuance of CKEditor 4 only for security updates and critical bug fixes, limited until December 2028.

CKEditor 5

After five years, in 2018, CKEditor 5's first stable version was introduced. With its code rewritten from scratch, CKEditor 5 has a custom data model