Registry Cleaner is a utility to clean and optimize Windows registry. The registry notification database is where Windows and installed programs save their settings. As a result the registry is queried for notification a few of times per second and the query time is an essential factor in PCs responsiveness. Windows Vista compatible! Abexo Registry Cleaner aims at reducing the query time by detecting and removing invalid data from the registry followed by a registry compression (defragmentation). The resulting registry database will have little to no errors and often be much smaller in size. A small registry is faster to be loaded into the memory and occupies less of the precious PC RAM. Furthermore a registry with less data is faster to be queried. Removing invalid registry entries prevents system errors and crashes. Abexo Registry Cleaner has a user friendly interface and comes with registry backup functionality.