title: Programming Language for Mac OS X application
body: <p>I have an upcoming project coming up in which I want to dedicate several months to making a professional application which is basically a text editor with a special purpose (can't disclose too many details). The program shouldn't be too complicated, but I wanted it to have a nice GUI and be fast enough to sell from either the Mac App store or my website.</p>
  
  <p>I was going to initially make it for Mac OS X and then later Windows and I wanted to know, for someone who is intermediate at programming, what language should I use for this program? Should I use a library? I already have a foundation in c++.</p>