Discovered Pages
[Discover] difftool.de http://www.difftool.de/
(tools diff) 
[Discover] BugManager 2004-12-17-003 http://db.bitkeeper.com/cgi-bin/view.cgi?id=2004-12-17-003 (difftool bitkeeper codereview)
[Discover] Diff tool http://www.arstdesign.com/articles/difftool.html (programming windows free tool)