Diffy

51,421

zsong

diff,compare,difference,comparison

DiffView

5,357

CJTozer

Git,git,SVN,svn,bzr,bazaar,diff,difference

BeyondCompare

2,500

npadley

diff,difference,diff/merge,file comparison

FileMerge

2

thtliife

file merge,utilities,diff,difference,merge,filemerge