Compare does diffs at a word level and lines up matching lines even if all words do not match. Not WinMerge, UltraCompare, or ExamDiff Pro, at least not that I have found. Compare’s 32/64 bits only issue I have is it will not compare large files with lot’s of diffs. I’m comparing a 6.5mb file to a 11.5mb file. If copy each file and make a change to the copy, then compare to the original, no problem.