Android developer slow88Ix, at Rootz Wiki has released a utility that can root Motorola Droid 3 just in one click. So, folks who are ready to root their Droid 3 must follow the guide written below to do that.
Warning: Proceed at your own risk, as this process may brick your mobile device.
Note: Following method is also applicable to root Cliq, Cliq 2, Droid X, Droid X2, Droid Pro, and Droid 2 Global.
See also:
How to Root Galaxy Nexus
How to Root Samsung Galaxy S II with S2 Root
How to Root Samsung Sidekick 4G
How to Root Motorola Droid 3 on Windows/Mac
Step-1
Download and install Motorola Android drivers for Windows 32-bit / 64-bit
Step-2
Download Droid 3 Easy Root Script and extract it
Step-3
On your Droid 3, tap menu and navigate to “Settings” > “Applications” > “Development” and enable “USB debugging”
Step-4
Connect your phone to computer and select “Charge Only” mode
Step-5
Go to “MotorolaOneClickRoot_psouza4” folder which is extracted in step 2, and run “MotorolaOneClickRoot.exe”
Step-6
Follow the on screen instructions carefully
Done! Your Motorola Droid 3 is rooted now.