RegSupreme Pro's Add/Remove menu shows you the list from the Add/Remove control panel applet but with the facility to remove obsolete items from the list.
RegSupreme Pro's Installed Software tab contains a list of software from various places inside the registry. Programs that were removed still leave some of these entries behind.
RegSupreme Pro's Registry cleaner scans your registry for errors and displays the list at the end of the scan. You can select the registry errors you wan to fix/delete from this list.
RegSupreme Pros's New File tab shows the list of file types you can create with the right click > New menu. You can remove file types you do not need from here.