CKeditor is an open source WYSIWYG text editor ,brings to the web much of the power of desktop editors like MS Word.it's lightweight and is compatible with most internet browsers which include: IE 5.5+ (Windows), Firefox 1.0+, Mozilla 1.3+ and Netscape 7+.
When writing a wordpress post simply use the following shortcodes to create your columns:
For example shortcodes you can copy and paste directly into a wordpress post please check the first comment on this post.
Additional Info: