We all know about the most popular file compression formats available, from the rather outdated and outperformed ZIP, to the quite popular 7-Zip, with the RAR format in between. In the last few years, the 7-Zip format gained a lot in popularity and is regarded by many to be the compression format offering the best ratio, but is it really the truth? If I were to tell you that there exists a format able to compress the 438 MB of Office 2007 Setup files down to 7MB archive, you may not believe me or worry for my mental stability, but after having tested it, I can confirm it is the truth and that there is no magic here, but just a very advanced algorithm: PAQ.