Xtractor

Xtractor is a small-sized and portable software utility designed to extract files from multiple ZIP archives at the same time while preserving the original directory structure.
It contains a couple of advanced options that are intuitive enough to be figured out by all types of users, even those with little or no experience in archive extraction tools.

No setup necessary

The entire app's packed in a single executable file that can be dropped anywhere on the disk or stored on a USB flash drive to be able to launch it on any PC with minimum effort and no previous installers. No changes are made to the system registry.
Plus, it doesn't need DLLs or other components to run, nor does it create files on the disk without your knowledge. To uninstall it, it's only required to delete its .exe.

Extract files from multiple ZIP archives

When it comes to the GUI, Xtractor opts for a horizontal window with a simple design and structure, where you can resort to the built-in tree view to pick a folder from the disk, which includes the ZIP archives you want to extract information from.
Worth mentioning is that it's possible to filter the archives by name, as well as to instruct the tool to delete the ZIP files after successful extraction jobs, in order to reduce occupied hard disk space. The whole operation can be initialized with the click of a button as well as canceled if you change your mind.

Evaluation and conclusion

It didn't put a strain on the machine's performance in our tests, thanks to the fact that it used a low amount of CPU and RAM to function normally. File extraction jobs were quickly carried out. The program remained stable throughout its runtime, without hanging, crashing or displaying error messages.
Although it doesn't have a particularly rich set of features, Xtractor offers a fast and effective solution for extracting files from multiple ZIP archives at the same time without any hassle. It's intuitive and free.