that is officially free for life, as well as a fully featured trial period Official Free License Options
Download the same installer. Upon installation, you will receive a trial key that unlocks the (unlimited sensors) for 30 days. This is perfect for auditing your entire infrastructure or handling temporary projects. When the trial ends, it reverts to the 100-sensor freeware edition. prtg network monitor license key free exclusive
The installer will automatically provide an official trial key during setup. that is officially free for life, as well