http://Irongeek.com  Better than it use to be  WSUS great for Windows clients you control http://technet.microsoft.com/en- us/windowsserver/bb332157.aspx http://technet.microsoft.com/en- us/windowsserver/bb332157.aspx Commercial:  Shavlik http://www.shavlik.com http://www.shavlik.com  Secunia CSI (can be uses with WSUS) http://secunia.com http://secunia.com Open Source:  http://wsuspackagepublisher.codeplex.com http://wsuspackagepublisher.codeplex.com
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