Milestone XProtect is a Surveillance/Camera Monitoring system. My organization uses either the Management Client on Servers and/or the Smart Client on workstations to connect to the Manage Client. You may have to have a Milestone account to retrieve these updates though.
Having this would dramatically assist our organization with keeping the systems up-to-date with the latest software releases/bug fixes -- especially with the hotfixes as those tend to come out quite frequently.
The main downloads can be found at this location (main installers - login may be required):
https://www.milestonesys.com/my-milestone/download-software/
Hotfixes/patches (no login should be required):