Update: For coda 2 , check http://www.onuryasar.com/blog-en/codeigniter-syntax-mode-for-coda-2/

Download Mod for coda 2 : http://www.onuryasar.com/blog-en/wp-content/uploads/2012/05/Codeigniter.mode-for-Coda-2-0-2.zip

Download Coda Mode http://www.codingmonkeys.de/subethaedit/modes/Codeigniter.mode.zip Unzip and you will get Codeigniter.mode folder Copy Codeigniter.mode to your_user_name/Library/Library/Application Support/Coda/Modes You will see CodeIgniter in Coda -> Text -> Syntax Mode That support autocomplete.