Nagios Log Server greatly simplifies the process of searching your log data
Set up alerts to notify you when potential threats arise, or simply query your log data to quickly audit any system
With Nagios Log Server, you get all of your log data in one location, with high availability and fail-over built right in
Did we mention no data limits?
Nagios Fusion offers your network a high degree of visibility and scalability, helping solve problems that come with multiple networks and geographical separation
By allowing you to visualize multiple Nagios XI and Core servers in one location, network management becomes simplified by centralization

When it comes to open source network monitoring tools, the World’s largest organizations turn to Nagios
Nagios monitors the network for problems caused by overloaded data links or network connections, as well as monitoring routers, switches and more
Easily able to monitor availability, uptime and response time of every node on the network, Nagios can deliver the results in a variety of visual representations and reports

Implementing effective application monitoring with Nagios allows your organization to quickly detect application, service, or process problems, and take action to eliminate downtime for your application users
Nagios provides tools for monitoring of applications and application state – including Windows applications, Linux applications, UNIX applications, and Web applications

See how we help thousands of companies save money and eliminate downtime

See more Nagios Case Studies here
Nagios helps e-commerce retail giant reach $125,000,000 in additional sales

The University of St. Thomas

University uses better data to improve purchasing decisions, bandwidth allocation, and reaction to anomalies
Energy solutions giant sees increased capabilities, productivity by deploying Nagios
Download the core monitoring engine and a basic web interface

Download the latest Nagios Core plugins package (50 plugins)

See a variety of Open Source front-ends by the community

See additional projects that extend Nagios Core functionality

Migrate to Nagios XI!

Get Nagios XI, our fully supported solution for monitoring, alerting, graphing and reporting
Moving core data is easier than ever!

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You can try any of our solutions free for 30 days with no restrictions
Monitor your entire IT infrastructure, quickly sort log data, or analyze your bandwidth with Nagios
Nagios is helping organizations around the world make better business decisions with proven IT infrastructure monitoring, data collection, and netflow analysis solutions