Dug out of Google's cache of the PICkit 3 page:
PICkit3 Programmer Application and Scripting Tool v3.10 6/12/2013 10:50:41 AM 8555 KB http://ww1.microchip.com/downloads/en/DeviceDoc/PICkit3%20Programmer%20Application%20v3.10.zip
The file is still accessible as of today.
CAUTION: this tool installs PICkit 2 emulation firmware with all that implies i.e limited device support. Make sure you have the most recent PICkit 2 device file from the PICkit 2 device list page and unofficial updates from these forums. You MUST run the menu item in the scripting tool to revert to PICkit 3 firmware to return to using MPLAB 8 or X. This utility does NOT require MPLAB 8 or X to be installed.
@jej1997: *THANKS* for fixing the link. I was trying to do so myself, but lost internet connectivity.
post edited by Ian.M - 2013/08/23 13:29:24