CKEditor 5 Rich Text Editor

CKEditor 5 is a modern, highly extensible rich text editor framework designed for building custom WYSIWYG editing experiences, with a strong emphasis on real-time collaborative editing. It is not a single product but a collection of features, plugins, and builds that can be combined. The current stable major version is v48.0.0, released in April 2026. However, v47.x is designated as the Long-term Support (LTS) edition for licensed customers, receiving security and compatibility fixes, while v48.x introduces new features and significant updates. CKEditor 5 is characterized by its MVC architecture, custom data model, and support for operational transformation (OT) to power real-time collaboration. It typically follows a regular release cadence for minor and patch versions, with major versions introducing significant architectural changes or deprecations, requiring users to stay updated with release notes. Its modular design allows developers to create highly customized editor instances tailored to specific application needs, ranging from simple document editors to complex collaborative writing environments.