Top : Computers : Software : File Management : File Comparison :
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Websites
Graphical front-end for diff. Open source Linux targz, FAQ, screenshots.
http://xxdiff.sourceforge.net
Makes ASCII histogram from diff output. Download targz source.
http://dickey.his.com/diffstat/diffstat.html
Rudy Wortel's X11/Motif based file comparator and merge tool for IRIX, SUN, Linux and AIX. Free, no source code.
ftp://ftp.sgi.com/sgi/xdiff/xdiff/index.html
A gnome2 diff, and merge tool for file comparisons. Edit files in place and the differences are updated dynamically. It also integrates with CVS either as an external tool or via the built in browser.
http://meld.sourceforge.net/