This application allow you to join and minify multiples JS and CSS files on the fly. Also is possible activate the auto minify option that allow you don't worry about realize this task each time. The Application will detect when you update a file and will regenerate the minify files automatically.
To minify all the files the application use minifier.com. But we are working to implement a offline library and process files faster.
This application is available for Windows and Mac and can be download in http://autominify.cloudbitinteractive.com/