1 - Super Rabbit Registry Optimizer 5.30 The registry file is the central management file for Windows system, and it maintains nearly all information about the system, so if it is damaged or deleted by accident, error will occur in the whole Windows sytem. So to keep the registry in good condition is to ensure the health of the system. License: Shareware OS: Windows 9X/ME/2K/XP/2003 Size: 1.49 MB