Cost / License
- Freemium
- Proprietary
Platforms
- Online

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, Better Stack, Datadog and Icinga.

Server Monitoring and Down Alerts made easy! WIndows, Linux & macOS Monitor servers easily and receive alerts on CPU, RAM or downtime.

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.




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.

OpsiMate is an open source platform that provides comprehensive infrastructure monitoring, automation, and management tools. Transform complexity into clarity with our unified, intelligent platform.



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.

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.
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.
Fodaris is a self-hosted monitoring and observability platform built for homelabs and businesses. It monitors servers, Docker containers, network devices, websites, APIs, databases, and applications from a single dashboard.







