solagirl

This plugin provides an additional code button for WordPress CKEditor so that you can use syntaxhighlighter with CKEditor.
<a href="https://wordpress.org/extend/plugins/ckeditor-for-wordpress/" rel="ugc">CKEditor For WordPress</a> plugin replaces the default WordPress editor with CKEditor, while <a href="https://wordpress.org/extend/plugins/auto-syntaxhighlighter/" rel="ugc">Auto SyntaxHighlighter</a> plugin intergrates alexgorbatchev SyntaxHighlighter JavaScript package into WordPress but doesn’t provide a code button for CKEditor. This is why I created the plugin.
If you opt not to install Auto SyntaxHighlighter plugin, then your code will simply be wrapped with pre tag.
Auto SyntaxHighlighter is not the only choice, there are plenty of plugins out there that integrate Alex Gorbatchev’s SyntaxHighlighter into WordPress, choose as you like.
Note: If you encounter any problem after upgrading please clear your browser’s cache.

SyntaxHighlighter CKEditor Button

This plugin adds a code button for WordPress CKEditor which helps to type or edit  tag for Alex Gorbatchev's SyntaxHighlighter.

doni2000

This plugin Replaces the default WordPress editor with <a href="http://ckeditor.com/" rel="nofollow ugc">CKeditor</a>.
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+. 
Features:
<ul>
<li>media buttons</li>
<li>Build-in File manager and upload manager.</li>
<li>Customize editor�s skin</li>
</ul>

CKEditor For WordPress

This plugin Replaces the default Wordpress editor with CKeditor.

SyntaxHighlighter CKEditor Button vs CKEditor For WordPress