tkcvs
Get it [link|http://www.twobarleycorns.net/tkcvs.html|here]. Had it on Linux. Works great. Get tkdiff, too, for real usefulness. (Hmm, their homepage says it's included in the download.)
We have to fight the terrorists as if there were no rules and preserve our open society as if there were no terrorists. -- [link|http://www.nytimes.com/2001/04/05/opinion/BIO-FRIEDMAN.html|Thomas Friedman]