The RegLookup project is devoted to direct analysis of Windows NT-based registry files. RegLookup is released under the GNU GPL, and is implemented in ANSI C. RegLookup provides command line tools, a C API, and a Python module for accessing registry data structures. The project has a focus on providing tools for digital forensic examiners (though is useful for many purposes), and includes algorithms for retrieving deleted data structures from registry hives.