Windows Event Log Analysis / Correlation
I am working in an environment where we have a mix of systems Windows Vista, 7 and XP and on Servers all Server 2008 R2. I am looking for a tool (free or opensource) which will help me do event log analysis and correlation for all the server machines. Currently, I am not looking for any centralized solution just a stand alone will be fine as well. Does any one has any experience or played with this kind of thing before.
Any help will be highly appreciated.