There is built-in code editor: http://joxi.ru/v3lNUxjKTJA4Eous4Gs Right now, it lags sometimes, but we'll migrate to Meteor 0.8 and this issue will be resolved. Also, at the bottom of editor, there is a link to http://wiki.pintask.me/wiki/How_to_write_an_extension with some info to get started. If you have specific questions, please reach me: Denis.D.Gorbachev at gmail