RegDllView

RegDllView is a small utility that displays the list of all registered dll/ocx/exe files (COM registration). For each registered file, you can view the last date/time when it was registered, and the list of all registration entries (CLSID/ProgID).
RegDllView also allows you to unregister dll/ocx files that you don't need on your system anymore. If you have dll/ocx files that don't exist on your system, but their registration entries still exist in your Registry, you can manually remove these entries.