--- category: api-reference --- # API documentation Use the **navigation tree on the left****main menu button in the upper-left corner** to navigate through CKEditor API. ## Popular API pages * {@link module:core/editor/editorconfig~EditorConfig Configuration Reference} – CKEditor configuration settings explained. * {@link module:editor-classic/classiceditor~ClassicEditor `ClassicEditor`} – The entry point for the Classic editor integration. * {@link module:editor-inline/inlineeditor~InlineEditor `InlineEditor`} – The entry point for the Inline editor integration. * {@link module:editor-balloon/ballooneditor~BalloonEditor `BalloonEditor`} – The entry point for the Balloon editor integration. ## Documentation * {@link framework/index CKEditor 5 Framework} – Learn how to develop with CKEditor 5 Framework, customize it and create plugins. * {@link builds/guides/overview CKEditor 5 Builds} – Learn how to install, integrate and configure CKEditor 5 Builds. More complex aspects, like creating custom builds, are explained here, too. * {@link features/index Features} – Learn about some of the features included in CKEditor 5 Builds. ## Contribute CKEditor is an Open Source project and your contribution is most welcome. Feel free to {@link builds/guides/support/reporting-issues report bugs} or improve the code on [GitHub](https://github.com/ckeditor/ckeditor5). Since CKEditor is localized, you can also help [to translate it](https://www.transifex.com/ckeditor/ckeditor5/). You do not need to be a programmer to contribute to the project!