You could have downloaded CleanReg 3.8.3.4 from our software library for free. Our antivirus check shows that this download is safe. The software lies within Office Tools, more precisely Document management. This program is an intellectual property of Armstrong's Systems House, Inc.
From the developer:
Scans the registry for dead file references. An easy to read usage report is displayed with the registry tree structure and file listing. Registry nodes and files may be added to a saved ignore list the same files are not visually analyzed each run. A registry import file is created to provide a record of changes and an Undo capability. This is a rewrite of the original 1997 CleanReg.
You may want to check out more software, such as Serena Prototype Composer 2008, which might be similar to CleanReg.