78.4k
Netdata
An advanced monitoring software providing real-time performance and health monitoring for your infrastructure.
🔎
Monitoring⚙️
DevOps🏎️
Performance
3 Open Source Alternatives to Nagios
Looking for an open-source alternative to Nagios? Below are 3 community-built tools that offer similar functionality — all free, open source, and ready to use or self-host. Ranked by GitHub stars.
63.5k
Prometheus
The Prometheus monitoring system and time series database for collecting and storing metrics as time series data.
🔎
Monitoring🛠️
Tools🔨
Utils🔬
Data Science
4.5k
Checkmate
Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations.
🔎
Monitoring📈
Visualization🏎️
Performance⚙️
DevOps
Frequently asked questions
What are the best open-source alternatives to Nagios?
The top picks from this list are Netdata, Prometheus, Checkmate — all maintained, free to use, and self-hostable.
Are these alternatives to Nagios free?
Yes. Every tool listed here is open source and free to use. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Can I self-host an alternative to Nagios?
Most of the alternatives listed are self-hostable. Check each tool's page for hosting details, system requirements, and licensing terms.
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