CompactGUI is a graphical manager for the Windows Compact OS API. It serves as a transparent compression tool and filesystem optimizer that reduces disk space for programs and folders while maintaining full application functionality and accessibility.
The project distinguishes itself through a community compression database, which allows users to retrieve and submit estimated compression ratios and times for specific software. This shared data system enables the prediction of potential space savings before applying compression.
The tool covers several operational areas, including performance optimization via algorithm selection and extension-based file filtering. It provides automation through background directory monitoring and integrates directly into the operating system context menu for initiating tasks. Additionally, it includes utilities for analyzing the compression status of directories and tracking processing statistics.