These programs will be fully functional for the first 30 days after its installation, called the trial period, after which you will have to purchase the software to continue using it. During the trial period, you can evaluate the software to its full extent without any feature-limitations.
Ace Utilities
Version: 6.6.0, Size: 8.6 MB, Released On: May 22, 2021.
For: Windows Vista, 7, 8, 8.1 and Windows 10 (32 & 64-bit).
License: Free to try, USD 29.95 to buy.
Release notes. For previous versions, click here.
System TuneUp
Version: 5.6.0, Size: 7.8 MB, Released On: May 22, 2021.
For: Windows Vista, 7, 8, 8.1 and Windows 10 (32 & 64-bit).
License: Free to try, USD 29.95 to buy.
Release notes. For previous versions, click here.
Registry TuneUp
Version: 5.7, Size: 3.92 MB, Released On: Jul 06, 2016.
For: Windows Vista, 7, 8, 8.1 and 10 (32 & 64-bit).
License: Free to try, USD 19.95 to buy.
Registry Finder
Version: 2.1, Size: 813 KB, Released On: Jul 04, 2016.
For: Windows Vista, 7, 8, 8.1 and 10 (32 & 64-bit).
License: Free to try, USD 19.95 to buy.
Freeware
You can use this software for free.
RegBak
Version: 1.5, Size: 573 KB, Released On: Aug 18, 2015.
For: Windows Vista, 7, 8, 8.1 and 10 (32 & 64-bit).
To download zip file instead of installer: regbak.zip (335 KB)
Registry Compactor
Version: 1.6, Size: 590 KB, Released On: Oct 19, 2014.
For: Windows Vista, 7, 8, 8.1 and 10 (32 & 64-bit).