The amount of errors it searched for and repaired is large. This software uses a special detection algorithm that rapidly identifies missing and invalid references in your registry. Registry Easy scans the entire Windows registry for any invalid and outdated entries and provide a list of the errors found. Then, you can choose to clean listed items or automatically repair them all. There's really no downside to this tool, except that it offers lots of features which might seem scary at first glance, but once you start using the features you'll see that this is a very good program. It will get your system repaired and running smoothly again.

When you download this program, it will identify errors related to missing DLL files, missing startup programs, missing file associations an help files, infiltration from spyware entries, as well as invalid device drivers and invalid application paths.

The advanced options offers some more features than some of the other similar programs, but not quite as much as the rest. It should definitely have more advanced options. But, if you are looking for basic stuff - this software is for you. The price of RegistryFix is minimal when you consider that it will prevent a lot of operating system errors and crashes in the future.

Reg Clean finds and removes unwanted registry entries, it  helps you backup your registry settings and allows you to restore it to the state before backup. 

It's very basic, but it gets the job done. However, there is not many special features in this software.

RegClean is very user friendly and uses a system of prompts to guide you through the entire process of registry repair. It's probably one of the fastest software of this kind. It usually only takes only a few minutes to scan and repair the errors. A great thing about this registry cleaner is its price. It is very cheap. Go for it if you want to save money and get your computer back to normal.