Auto-Sign app for MAC users
XDA forum member jessetbenton, has designed a droplet application for mac users that will auto-sign .apk and .zip files for Android. If you’re a mac user and a theme designer or modder this app could really save you some time and effort!
Originally posted by jessetbenton
It is a droplet application, meaning you just have to drag the file you want signed onto the application itself. A new file will be created with -signed at the end of the file name. For this to work you need to have testsign.jar in your root directory. The root directory is the first place you come to when you click on the mac hard drive.
To download the app and for more information, check out the application thread.