Netdata is described as 'Collects metrics per second and presents them in beautiful low-latency dashboards. It is designed to run on all of your physical and virtual servers, cloud deployments, Kubernetes clusters, and edge/IoT devices, to monitor your systems, containers, and applications' and is a popular Network Monitor in the network & admin category. There are more than 50 alternatives to Netdata for a variety of platforms, including Linux, Self-Hosted, Web-based, Windows and SaaS apps. The best Netdata alternative is Grafana, which is both free and Open Source. Other great apps like Netdata are Zabbix, Better Stack, Datadog and Nagios.
Checkmk is a monitoring tool of servers, applications, networks, cloud, containers, storage, databases, IoT and more. Checkmk is available as Raw Edition, which is 100% pure open source, and as Enterprise Edition with a lot of additional features.
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Network intruder and presence detector. Scans for devices connected to your network and alerts you if new and unknown devices are found.
Monit is a free open source utility for managing and monitoring, processes, programs, files, directories and filesystems on a UNIX system. Monit conducts automatic maintenance and repair and can execute meaningful causal actions in error situations.
United Kingdom
Pulseway offers a full IT stack of software and services to help you look after all your IT needs. All simple to use, integrated into one platform.
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Open source observability platform. SigNoz helps developers find issues in their deployed applications & solve them quickly.
United States
Logit.io is used for a wide variety of use cases including log management, business intelligence, SIEM, APM, container monitoring, infrastructure monitoring, monitoring website uptime, measuring sales performance & vulnerability scanning.
United Kingdom
Trafikito is free Linux servers monitoring solution which by default checks RAM, disk space, CPU and sends you an email if something is wrong.
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All-in-one server, uptime, and status page monitoring with built-in AIOps. One command auto-discovers 30+ services on Linux and Windows; 1-minute checks, 20+ alert channels, and an MCP server for Claude, Cursor, and other AI agents. Free for 2 servers and 8 checks.
United States
ChaosSearch specializes in data analytics and indexing solutions for large-scale cloud object storage environments. The company is innovating in data indexing and search, making it easier to access and analyze vast amounts of application telemetry data efficiently.
United States
Easy to use configuration web interface for nagios and neamon. openITCOCKPIT is a perfomant monitoring system with support for distributed monitoring (Satellites), REST API, nice dashboards, maps, graphs and a modular concept for easy customization.
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Jaeger, inspired by Dapper and OpenZipkin, is a distributed tracing platform created by Uber Technologies and donated to Cloud Native Computing Foundation. It can be used for monitoring microservices-based distributed systems:
