Regdiff is a free software that lets you easily compare, merge and sort registry files. You can directly compare reg files with each other or with the local registry values on your system.

This Microsoft PowerToys app simplifies the process of visualizing and modifying the contents of the standard Windows Registry file.

As a follow-up to the secure Windows file deletion post highlighting the Windows file Shredder, reader Michael Wilson has put together a registry hack to add the File Shredder to his right-click menu.