Envoy ◆
Envoy is a visitor management and workplace platform with secure check-in, emergency response, and compliance.
from $362/location/mo (billed annually)
About Nagios
What is Nagios?
Nagios is a comprehensive IT infrastructure monitoring platform that provides deep, full-stack visibility across your servers, applications, and critical services. It helps businesses and organizations of all sizes proactively detect and resolve issues before they impact operations, ensuring high availability and performance.
Key Solutions
Nagios offers a suite of tools including Nagios XI for enterprise-grade network monitoring, Network Analyzer for traffic analysis (NetFlow, sFlow, IPFIX), and Log Server for centralized log management. These can be deployed together or individually to address specific monitoring needs.
Who is it for?
Nagios is ideal for IT teams, network administrators, and DevOps professionals who need robust monitoring across legacy, cloud, and hybrid environments. It's perfect for organizations that require proactive alerting, long-term performance trending, and audit-ready evidence for security and compliance. It is not suitable for beginners looking for a simple, out-of-the-box monitoring solution without initial setup.
Real Use Cases
Nagios is commonly used to monitor server health, track bandwidth utilization, detect network intrusions, and collect logs for security analysis. For example, a security team can use Nagios to detect unauthorized devices, trace anomalous traffic, and produce documented evidence for audits. Networking teams can unify multi-site visibility into a single dashboard.
Key features
- Infrastructure Monitoring — Track server health and availability across legacy, cloud, and hybrid environments.
- Network Monitoring — Monitor network services, bandwidth usage, and graph long-term performance trends.
- Log Monitoring & Management — Collect, query, and alert on syslogs, Windows event logs, and application logs with high availability features.
- Network Traffic Analysis — Analyze NetFlow, sFlow, and IPFIX data with packet-level inspection and threat detection.
- Multi-Site Visibility — Unify Nagios XI, Core, Log Server, and Network Analyzer from multiple locations into a single view.
- Proactive Alerts — Get notified the moment a device changes state or a service fails, enabling rapid response.
SaaSpartout Score
6.8
/10
Editorial score from our review methodology — not user ratings.
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Nagios Pricing
Nagios pricing: Free trial available; contact sales for full pricing. Billing model: Free.
For comparison: the median starting price in Cybersecurity is $9.99/month, measured across 116 tools we track. See the full SaaS Pricing Index →
Free Trial
Nagios XI offers a free 14-day trial with full features, allowing you to evaluate the software. No credit card required.
Standard Plan
Pricing for Nagios XI is subscription-based and varies by the number of hosts monitored. Contact Nagios sales for exact quotes based on your environment size. The tool is also available as a free, open-source version (Nagios Core) with limited features.
Additional Toolkits
Network Analyzer and Log Server are available as separate licenses, either bundled with XI or individually, to add traffic and log layers to your monitoring stack.
Frequently asked questions
How much does Nagios cost?
Nagios XI pricing is not publicly listed; you must contact sales for a quote based on the number of hosts. However, Nagios Core is free, open-source, and Nagios XI offers a free 14-day trial.
Is Nagios free to use?
Yes, there is a free, open-source version called Nagios Core. For more advanced features, Nagios XI is a paid enterprise product, but you can try it for free for 14 days.
What is Nagios used for?
Nagios is used for IT infrastructure monitoring, including servers, network devices, applications, and services. It lets teams detect and resolve issues before they impact operations.
Who is Nagios best for?
Nagios is best for IT teams, network administrators, and DevOps professionals who need full-stack visibility across hybrid and cloud environments, with proactive alerting and long-term performance trending.
What are the main alternatives to Nagios?
Alternatives include Zabbix, PRTG Network Monitor, Datadog, and SolarWinds. These offer similar monitoring capabilities but differ in pricing, ease of use, and deployment.
Does Nagios support log monitoring?
Yes, Nagios Log Server provides log monitoring and management, allowing you to collect, query, and alert on syslogs, Windows event logs, and application logs.
