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Nagios Exchange - The official site for hundreds of community-contributed Nagios plugins, addons, extensions, enhancements, and more!

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...

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.

Linux training and tutorials for Linux desktop and server users. Linux courses and live classes hosted weekly on Ubuntu, CentOS, Nagios and more.

- UNIX and Linux Forums - Learn UNIX, UNIX commands, Linux, Operating Systems, System Administration, Programming, Shell, Shell Scripts

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

LinuxQuestions.org offers a free Linux forum where Linux newbies can ask questions and Linux experts can offer advice. Topics include security, installation, networking and much more.

MCS provides IT consulting services, application development, data center, colocation, hosting, and telecommunication services throughout the midwest.