Download of xScanPro 4.0.4 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. XScanPro for Mac lies within System Tools, more precisely Remote Computing. This free Mac app is an intellectual property of ADNX. We recommend checking the downloaded files with any free antivirus.
From the developer:
xScanPro lets you monitor multiple Mac computers or servers from a remote location. However, using this free application requires the purchase of the xScanPro Server application for Mac or a subscription of xStream service for xScanPro. The server collects data of all monitored computers. Then, you can use xScanPro and start monitoring your computers.
You may want to check out more Mac applications, such as CrazyRemote, Remote Buddy Express or ARD Monitor, which might be similar to xScanPro.