RPG Attack is a program that fills a very, very narrow niche — people who want to apply academic style statistical analysis to RPG combat. There probably aren’t very many people like that in the world. I still think it’s really cool.
This type of program would be familiar to anyone who’s done grad school research in psychology, animal behavior or other social sciences. Basically, for certain experiments, you simply watch a group of people or animals, then note what they do using a special code. In this case, your group of animals is your RPG group, and the program does the coding for you, vastly streamlining the process.
It was put together by someone named The Prince of Dusk, along with our favorite RPG analyst, The Id DM. It works like this: you record your gaming session on video or just as an audio podcast. Then you listen to it later, running the program and hitting the right buttons to indicate what goes on in a given combat round. At the end, RPG Attack spits out the data as a spreadsheet. The original post at the Id DM explains it more clearly and has a download link.
This is obviously not of interest to your average RPG group, but with 5E on the horizon, and the 5E open playtest coming up quite soon, it could certainly be beneficial for a few test groups to run this and get a real, concrete set of data about how various rule changes effect combat speed around the table. As slow combat is one of the most common complaints from 4E, that could be a pretty big deal.