XDA Developer member, Mskip has released another decent sized batch of tool kit for Samsung Galaxy S3 . Of course, you can use this free all-in-one tool kit root your Galaxy s3 with only one simple click. Compare to other root method, Mskip S3 tool kit can use to backup, Flash CWM, Unroot (coming soon) and etc. The tool kits are easy to use: Users simply open up the interface, and are given all the tools needed to make a successful unlock.
How to Use?
Step 1: Download (Link) and Install Samsung Galaxy S3 Root Tool Kit on your PC.
Step 2: Now you can choose which task you want to perform on your Galaxy S3.
Step 3: For example, now i want root my galaxy s3. Then i just key in “2” and press enter.
Step 4: Then before start the root process, option and step by step instruction will prompt out and guide me the details step (from enable developers option rooted) on how to root.
Step 5: Just simply follow on screen instruction to root. So easy!
source: XDA, mskip