Welcome to the past! 👻
Unfortunately, CKEditor 3 is no longer with us. RIP ❤️
Or, you can discover CKEditor 4, which is an enterprise-grade WYSIWYG editor with countless features and wide browser compatibility including the legacy ones.
This release is not yet targeted to production web sites. It's ready and stable enough to be integrated on testing environments, preparing your software for the upcoming Release Candidate.
Visit the CKEditor web site to test and download it.