I didn't forget it, and it's one of my favorites too -- but I don't know if it qualifies as the most impactful. People who use it love it, but it's not very wi

I didn't forget it, and it's one of my favorites too -- but I don't know if it qualifies as the most impactful. People who use it love it, but it's not very widely used compared to, say, bsdiff.