The one without apps and with open source MIT license is Time Server App, https://timeserver.app/ Report comment. Reply. ScriptGiddy says: July 26, 2021 at 4:21 am Probably not.

This will set the internal clock to the primary time server, or the secondary one of the first option doesn't work. Click Obtain to synchronize your router's clock with the time servers.

Click the "Internet Time" tab and click "Change Settings." Check the box that says "Synchronize with an internet time server" if you wish to automatically sync the clock, or uncheck it if you want ...

This parameter, when run for W32tm.exe, registers the time service to run as a service and adds the default configuration to the registry. To do so, in an elevated command prompt, ...