Group Policy
https://gpsearch.azurewebsites.net
Latest Windows and Windows Server
https://www.microsoft.com/en-us/download/details.aspx?id=25250
1803/1709
https://www.microsoft.com/en-us/download/details.aspx?id=56946
Popular GPO List
https://gpsearch.azurewebsites.net/#1843
Group Policy 2012
New Features in 2012 http://technet.microsoft.com/en-us/library/hh831791.aspx
“In the Cloud” - Group Policy Search http://gpsearch.azurewebsites.net/
Group Policy 2008
There is a new tool named ControlUp by Smart-X (search for it) using which you can perform stuff like GP refresh remotely on multiple targets (computers or users) and verify the policy application by comparing the following registry value across all users:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\
System\DisableTaskMgr
