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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...

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...

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

YouTube is a place to discover, watch, upload and share videos.

We minimize your everyday IT problems by providing easy to use open source network monitoring tools. op5 Monitor is a comprehensive Open Source network monitoring software that is easy to use.

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

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

Percona is the oldest and largest independent MySQL consulting company, with a global 24x7 staff of 40 people since 2006, providing consulting, support, training, and engineering services.

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