Enterprise System Management Freeware software

[rbhasin at hssworld.com]

Hi, 

Firstly I am Sorry for being offtopic. 

I am looking for a freeware solution for Enterprise System Management so 
as to monitor the systems at our premises running various flavous of Unix 
like Linux, Solaris, HP-UX and Microsoft Windows Operating system. Any 
pointers for this freeware software would be highly appreciated. 

Thanx in Advance. 

Regds, 
- Rajan 

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