The System Registry is like the central nervous system of your computer. Virtually all Windows programs, and Windows itself, store a massive array of information inside this database. These thousands of entries control the behavior and appearance of virtually everything on your system. With Registry Compressor you will: Improve system performance. Reduce the amount of time it takes your system to boot. Save memory by compacting the registry. Protect your privacy by permanently erasing previously deleted entries. Prevent registry corruption by building a fresh copy of the registry.