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The UNIX and Linux Forums - Free Tech Support
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ServerWatch -- Everything Servers: Virtualization, Linux, Windows, Unix -- News, Reviews and Analysis for Server Admins
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ODBC, JDBC and XML Driver Downloads for Windows, Unix, Linux and Mac OS X
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NetSarang Website – Windows to Linux Network Connectivity Solutions
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Monitorix :: a free, open source, lightweight system monitoring tool
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unixmanga.net
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LiveFire Labs: Online UNIX Training with Hands-on Internet Lab