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Alternatives

Products that do what Nagios Open Source does

Server monitoring software.

  1. 1

    Open-source status page and uptime monitoring system

    Oct 2025

  2. 2OO

    Hey HN! We’re Max and Thibault building OpenStatus.dev an OpenSource synthetic monitoring platform with incident managements 1 min demo: https://twitter.com/mxkaske/status/1685666982786404352 We have just reached 2000 stars on GitHub https://github.com/openstatusHQ/openstatus We are really excited to hear your feedback/questions and connect further: our emails are [email protected] and [email protected]. Thank you!

    2023 · openstatus.dev

  3. 3

    Keep your website thriving with unmatched monitoring

    2023

  4. 4
    Keep682

    The open-source alerts management and automation platform

    2023 · github.com

  5. 5
    Opengrep340

    The open source code security engine

    2025

  6. 6
    Komiser386

    Open-source cloud environment inspector

    2023

  7. 7KG

    Hi Hacker News! Shahar and Tal from Keep here. A few months ago, we introduced here at HN (https://news.ycombinator.com/item?id=34806482) Keep as an “open source alerting CLI” and got some interesting feedback - mainly around UI, automation, and supporting more tools. We were VERY early back then, and we understood that although the current DX around creating alerts is not great, it's not that critical and developers don’t need another tool just for that. But we did find something else. While talking to developers and devops, we found that a lot of companies use many tools…

    2023 · github.com

  8. 8
    Bosun108

    Open-source monitoring and alerting system by Stack Exchange

    2014

  9. 9MO

    2021 · monika.hyperjump.tech

  10. 10AO

    Hey HN. We’re Jay and Vadim from Highlight.io (https://highlight.io). We’re building an open source [1] monitoring platform for web applications. Today we’re excited to be sharing a performance tool we’ve been working on, which helps you inspect the latency of code execution from the client to the server. As engineers at past startups, we often had to debug slow queries, poor load times, inconsistent errors, etc... While tools like Jaegar [2] helped us inspect server-side performance, we had no way to tie user events to the traces we were inspecting. In other words, although we had…

    2024 · github.com

  11. 11

    Free forever website monitoring & status pages 🤩

    2018

  12. 12OA
  13. 13
    LLMonitor128

    Open source monitoring and production toolkit for AI apps

    2023

  14. 14AO

    Hello Everyone, I'm excited to introduce a new open-source observability platform and would love to hear your feedback. We are aware that there are lots of open-source/commercial tools out there. However, we believe that monitoring the clusters and extracting actionable insights requires deep know-how about the tools/domain. We mainly focused on this problem. - Alaz is an eBPF agent installed on your K8s cluster as DaemonSet. Thanks to eBPF, Alaz collects traces directly from Linux kernels. This means there's no need for sidecars, instrumentations, or service restarts. - The UI not…

    2023 · github.com

  15. 15OB
  16. 16SH
  17. 17AO
  18. 18IB
  19. 19SO

    ServiceRadar is an open-source platform for distributed, secure network management and observability, scaling to 100k+ devices. Born from frustration with complex traditional NMS tools like Zabbix, it bridges legacy (SNMP/syslog) and modern (gNMI, OTLP) protocols for cloud-native environments. We built ServiceRadar to simplify monitoring hybrid telecom networks, evolving it into a Kubernetes-native solution with Helm and Docker support. It uses mTLS with SPIFFE/SPIRE, NATS JetStream for event streaming (90M+ EPS), and SRQL for intuitive queries. Integrated with OpenTelemetry,…

    Oct 2025 · github.com

  20. 20
    Hawk129

    Open-source errors tracker

    2022

  21. 21
    Keep108

    Alerting, by developers, for developers

    2023

  22. 22
    Nixstats117

    A new powerful monitoring tool for your server and website.

    2017

  23. 23

    Self-hosted & easy to use uptime monitoring software.

    2022

  24. 24OS

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