"The page below is from the manual of PRTG, our quick-to-install and easy-to-use network monitoring software"
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PRTG Manual: Download PRTG
On the Paessler website, you find two different installers for PRTG, a public download for the Freeware, Special, and Trial editions, and a login link to download the commercial editions (which is only available for paying customers).
Please download the latest publicly available file from the Paessler website. You can also request a trial key there, which must be entered during installation:
Note: Every Freeware installation will start as a Trial version, giving you an unlimited number of sensors for 30 days. After the trial period has expired, your installation will automatically revert to a Freeware edition with 30 sensors.
Downloads and updates are free to customers with an active maintenance contract. Please log into the Paessler website to get the latest download. You can also find your license key there, which must be entered during installation:
If you do not have an active maintenance contract, please contact firstname.lastname@example.org.
Note: Once installed, you will usually use the Software Auto-Update function of PRTG to download and install new versions. This will further ease the process of installing updates.