Recently I was introduce to Texter from lifehacker and I must say it is amazing.
http://lifehacker.com/238306/lifehacker-code-texter-windows
It is a windows base program (Sorry Mac), I use it when I code to even when I email.
Go ahead and check it out.
About the Author:
Angel Anderson “The Head Viking” unique military approach, marketing creativity, business and life strategies have proven to bring results in many markets online and offline. Know more about Angel here http://www.angelanderson.com