CodeMirror is available at: http://codemirror.net diff_match_patch (used by CodeMirror Merge addon):
https://code.google.com/p/google-diff-match-patch jshint.js (used by CodeMirror Javascript lint addon): http://ajax.aspnetcdn.com/ajax/jshint/r07/jshint.js csslint.js (used by CodeMirror CSS lint addon): https://rawgit.com/stubbornella/csslint/master/release/csslint.js