Nagios Alternatives
Nagios is described as 'Powerful monitoring system licensed under Nagios Enterprises that helps organizations identify and resolve IT infrastructure issues' and is a popular Network Monitor in the network & admin category. There are more than 100 alternatives to Nagios for a variety of platforms, including Linux, Windows, Web-based, Self-Hosted and Mac apps. The best Nagios alternative is Zabbix, which is both free and Open Source. Other great apps like Nagios are Netdata, Icinga, Datadog and Cockpit Project.
Alternatives list
pgDash is a modern, in-depth monitoring solution designed for PostgreSQL. pgDash shows you information about every aspect of your PostgreSQL database server, collected using the open-source tool pgmetrics, and includes Diagnostics & support for Teams.
Cost / License
- Paid
- Proprietary
Platforms
- Linux
- Online
- Self-Hosted


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Wolfpack aims to be the "swiss army knife" of monitoring. To borrow a line from Etsy..."if it moves we monitor it, even if it doesn't move we'll monitor it just in case it makes a break for it!".
Cost / License
- Free
- Open Source
Platforms
- Windows
PagespeedPlus.com is a tool for measuring page speed insights scores at scale. Large websites and agencies now have the perfect tool for running automated scans and receiving alerts when their score is low.
Cost / License
- Paid
- Proprietary
Platforms
- Online

When a server goes down, it costs not only money but also productivity loss and reputational damage. The majority of the servers go down because of a full disk. Logs are getting too big, or disk images cache grows without bounds.
Cost / License
- Free Personal
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)
SeaLion is a FREE Linux server monitoring and debugging tool for easy troubleshooting across hundreds of servers. View raw output of critical events across your servers and debug your server issues. Latest version shipped with 5 default services.
Cost / License
- Freemium
- Proprietary
Alerts
- Discontinued
Platforms
- Linux
- Online


+1
- 40 Loggifly alternatives
LoggiFly is a lightweight tool that monitors Docker container logs for predefined keywords or regex patterns and sends notifications.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Self-Hosted
- Docker


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Amon is an all-in-one server monitoring tool. Amon monitors you cloud, system, process and applications metrics with zero configuration.


Server monitoring with metrics, logs, alerts, and mobile access. One-command install, simple UI only setup and a clear pricing.
Cost / License
- Paid
- Open Source (GPL-3.0)
Application types
Platforms
- Linux
- Online
- Software as a Service (SaaS)


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- 35 Sensu Go alternatives
Sensu Go is a complete rewrite of Sensu in Go, with new capabilities and reduced operational overhead. It eliminates several sources of friction for new and experienced Sensu users.
Cost / License
- Freemium
- Open Source (MIT)
Platforms
- Go (Programming Language)
- Docker
- Mac
- Windows
- Linux
- Self-Hosted
- BSD
- 52 OpenObserve alternatives
A cloud-native observability platform built specifically for logs, metrics, traces, analytics, RUM (real user monitoring — performance, errors, session replay) designed to work at petabyte scale.
Cost / License
- Freemium
- Open Source (AGPL-3.0)
Application type
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)
- Docker




























