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Open Source Infrastructure Monitoring Tools using GitHub

A curated collection of the best open source tools for monitoring servers, containers, and network infrastructure. using GitHub.

NetData

Real-time monitoring for systems and applications

  • Stars

    81,117

  • Last commit

    1 day ago

  • License

    GPL-3.0
Powerful, efficient, and user-friendly monitoring solution for servers, containers, and applications with instant insights and alerts.

Open Source Alternative to:

DataDog

Prometheus

Open source metrics collection, storage, and alerting

  • Stars

    66,735

  • Last commit

    12 hours ago

  • License

    Apache-2.0
Pull-based monitoring system with a multi-dimensional data model, PromQL query language, built-in alerting, and a time series database built for cloud native environments.

Open Source Alternative to:

DataDog

VictoriaMetrics

High-performance time series database for metrics and logs

  • Stars

    17,902

  • Last commit

    1 day ago

  • License

    Apache-2.0
Time series database and monitoring platform compatible with Prometheus, handling billions of metrics with lower resource usage than most alternatives.

Open Source Alternative to:

DataDog

Scanopy

Auto-generated network diagrams that stay current

  • Stars

    5,899

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Discovers your network via SNMP, LLDP, and ARP, then builds and maintains L2/L3 topology diagrams, host inventories, and service dependency maps automatically.

Open Source Alternative to:

Paessler PRTG

Zabbix

Enterprise monitoring for networks, apps, and infrastructure

  • Stars

    6,504

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Monitors networks, servers, cloud services, IoT, and OT environments with no per-device licensing fees, available self-hosted or as a managed SaaS platform.

Open Source Alternative to:

DataDog

Checkmk

AI
Complete IT infrastructure monitoring made simple

  • Stars

    Stars growing over the last 30 days2,610

  • Last commit

    9 hours ago

  • License

    GPL-2.0
Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available.

Open Source Alternative to:

DataDog

Icinga

Open source monitoring for complex IT infrastructure

  • Stars

    2,242

  • Last commit

    2 days ago

  • License

    GPL-3.0
Monitor networks, servers, and cloud environments with flexible open-source solution. Custom checks, fast alerts, and complete infrastructure control.

Open Source Alternative to:

DataDog

Nagios

Complete infrastructure monitoring with 25+ years of expertise

  • Stars

    2,061

  • Last commit

    3 months ago

  • License

    GPL-2.0
Free open source IT monitoring solution for servers, networks, and applications. Trusted by 1M+ users worldwide with powerful alerting and enterprise-grade features.

Open Source Alternative to:

DataDog

Peekaping

Self-hosted uptime monitoring you own and control

  • Stars

    1,202

  • Last commit

    8 hours ago

  • License

    MIT
Open-source uptime monitoring solution with real-time alerts, status pages, and comprehensive checks for websites, APIs, databases, and services.

Open Source Alternative to:

BetterStack

Wachd

AI-powered root cause analysis for on-call alerts, self-hosted and air-gapped

  • Stars

    42

  • Last commit

    1 month ago

  • License

    Apache-2.0
Receive alerts from Grafana, Datadog, and Prometheus with AI-generated root cause analysis. Self-hosted on Kubernetes, fully air-gapped capable, Apache 2.0 licensed.

Open Source Alternative to:

DataDog
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