Erunt is a very small but powerful tool that can provide you with a backup and restore system when it comes to your Windows registry entries.

The user interface of the product consists of a small window in which you have few options.

So, you can get started by specifying a directory where the registry backup will be saved. In matter of backup options, you can enable Erunt to save the system registry, current user registry and other open user registries.

Once you have initialized the task, you can view a progress bar for the current and total files which are being saved. The moment the job is completed, a message pops up, one that reveals the current destination of your registry backup.

In addition, a separate application allows you to optimize your Windows registry files. After the task is completed, you can view the initial and current size occupied by the registry, as well as the reduction. In order for the effects to be visible, you have to restart your computer.

If you want to restore a registry backup, all you have to do is go to its location, open Erunt and select restoration options (system registry, current user registry, other saved user registries) and mode (NT, automatic, file copy).

The program uses a very low amount of system resources. It doesn't include a help file, but that's because Erunt is extremely easy to use, even by beginners.

All in all, Erunt is a very good tool that can help you backup and restore your Windows registry keys. We haven't come across any kind of problems during our tests and we strongly recommend it to all users.