If you are looking for a paid app, then you can check this:

it also has HTML > BBCODE or vice-versa
soft2050 Reviewed by soft2050 on . Looking for desktop BBCode > HTML Convert well guys am looking for a app or plugin for Notepad++ which will allow me to convert BBCODE to HTML.... i use bbcode-to-html.com but sometimes its down and i really need it all the time so a handle app would be great :) thanks Rating: 5