What is Power File Search? Power File Search (PFS) is a utility for searching files and folders. It's one of the fastest search utilities on the market, it has an intuitive interface that enables you to quickly set your search options, and - last but not least- it really finds the files you are looking for. What's wrong with the built-in search utility of Windows? Actually a lot. It is terribly slow, it lacks intuitive and convenient search options and it doesn't find all the files you are looking for. Have you ever had the experience of searching for that special file containing some particular phrase, a file you were absolutely sure about it was on your system, but Windows did not find it? That's likely because the Windows built-in search utility doesn't search in files with unknown extensions.