GURPS Character Builder
   The official GURPS character generation software (Windows only).
   http://www.sjgames.com/gurps/characterbuilder/

GURPS Vehicle Builder
   Windows program for Vehicle creation, including rules from most GURPS books.
   http://www.sjgames.com/gurps/vehiclebuilder/

GURPS Vehicle Designer
   Windows design program for GURPS Vehicles 2nd ed rules. Free demo available.
   http://www.makosoft.com/

GURU
   GURPS Character creation software for Windows. Detailed and customizeable.
   http://www.aquariuscreations.com/GURU.html

SJ Games GURPS Software
   The official SJ Games licensed software page, linking to the work of authorized shareware authors and other electronic items that support their games, with GURPS earning the heaviest support. Items for many platforms are included.
   http://www.sjgames.com/general/gm-aids.html#gurps