The site that hosts it says "Desktop Central provides a set of free Windows tools that Windows Administrators might require on a day-to-day basis. It has a set of ten tools, viz: Remote Task Manager Tool, Wake on LAN, Software Inventory Tool, Remote Command Prompt Tool, GPO Update, Shutdown/Restart Tool, Join/Unjoin Computer Tool, , Currently Logged On User, Hard Disk Space Detector Tool, and Local Users/Groups List Tool. This is very handy as it can be performed on multiple computers simultaneously. These tools are made available from the Desktop Central family and is provided as a separate download, which is absolutely free to use."
Once again you can't beat free.