This website contains links to software which is either no longer maintained or will be supported only until the end of 2019 (CKFinder 2).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.
This document offers some guidelines that must be considered when developing server side integration for FCKeditor (alias Server Side Integration Pack). There are a few points of integration that every server side technology should have to be completely ready for FCKeditor. These are the main features: