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Nagios is the industry-standard in IT infrastructure monitoring. Nagios provides enterprise-class Open Source monitoring of hosts, services, applications, and networks. Learn why organizations around the world trust Nagios to handle their IT infras...

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

Nagios Enterprises provides commercial solutions around Nagios - the industry standard in IT infrastructure monitoring. Learn why organizations around the world trust our products to handle their IT infrastructure monitoring and business process con...

The Nagios Library contains an extensive knowledgebase on Nagios products and services. Visit the library to find videos, howtos, tutorials, and more.

OLEX provides a one stop resource for certified enterprise ready Open Source Software Downloads, Open Source Management & Governance as well as leading Commercial Open Source Support services across a wide range of open source software packages.

Tecmint - Linux Howtos, Tutorials, Guides, News, Tips and Tricks.

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Reviews and free software downloads for Windows, Mac, Palm, Pocket PC, and Mobile Phones. The best programs and games. Buy software directly online.

Provides Instruction Guides, How-Tos, Troubleshooting Tips and Tricks on Linux, Database, Hardware, Security, Web and Open Source for both Newbies and Geeks - TheGeekStuff by Ramesh Natarajan

GeekPeek.Net is a Linux How To blog! Learn Step-by-Step how to install, configure and manage Linux operating system and other open source software.