In attempts to make my JavaScript applications better, I frequently use Douglas Crockford's JavaScript verifier application JSLint. If you have never used JSLint, I would advise reviewing the background on JSLint

In order to use it more easily and efficiently on local files, I took the JSLint JS file and ported it to an Adobe AIR application for the desktop. You can import the file from your desktop or paste the code in directly. In a future edition, I will add drag and drop ability to JS files. I used jQuery UI for the app UI and plan to eventually add skin choices to the options menu base on jQuery UI default skins. The app will auto update, so you will be able to see new features as soon as I add them if you accept the updates.

Check out the Interface Preview, and give the app a try. Please leave all comments and bug issues as comments in this thread. Enjoy!