From: Andreas Kaestner on
http://www.prestosoft.com/edp_examdiff.asp

ExamDiff is a freeware Windows 95/98/Me/NT/2000/XP/2003/Vista tool for
visual file comparison. It is quick and very simple to use, and has a
number of convenient features that many users have been asking for a
long time from a file comparison tool.

New feature! The current released version is 1.8 (Build 1.8.0.4,
Saturday, December 12, 2009). Version 1.8 introduces an Autopick feature
to remember matching file pairs, Windows Vista support, and other
additions.


Enjoy
Andreas