Can I use my registered copy of RJL System Cleaner on multiple...

Your registration is for your personal use. Since RJL System Cleaner is a single portable .exe with no license key or activation, you can practically use it on your own computers -- your desktop, your laptop, a USB drive for maintenance, and so on.

For business or organizational use across many machines, please contact us about volume licensing at https://rjlsoftware.com/contact.html.