Top 13 open source APM tools in 2021

This page summarizes the projects mentioned and recommended in the original post on

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  • signoz

    SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. 🔥 🖥. 👉 Open source Application Performance Monitoring (APM) & Observability tool

    Logs, metrics, and traces form the three cornerstones of full-stack APM tools. In that scenario, a tool like SigNoz can serve all your needs for application monitoring. As the instrumentation is based on OpenTelemetry, you also have the added advantage of not being locked into any product. You can try out SigNoz by visiting its GitHub repo 👇

  • Graphite

    A highly scalable real-time graphing system

    🌐 Website 💻 GitHub

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  • Pinpoint

    APM, (Application Performance Management) tool for large-scale distributed systems.

    🌐 Website 💻 GitHub

  • prometheus

    The Prometheus monitoring system and time series database.

    🌐 Website 💻 GitHub

  • JavaMelody

    JavaMelody : monitoring of JavaEE applications

    💻 GitHub

  • Stagemonitor

    Discontinued an open source solution to application performance monitoring for java server applications

    🌐 Website 💻 GitHub

  • scouter

    Scouter is an open source APM (Application Performance Management) tool.

    💻 GitHub

  • Onboard AI

    ChatGPT with full context of any GitHub repo. Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at

  • zipkin

    Zipkin is a distributed tracing system

    🌐 Website 💻 GitHub

  • jaeger

    CNCF Jaeger, a Distributed Tracing Platform

    🌐 Website 💻 GitHub

  • skywalking

    APM, Application Performance Monitoring System

    🌐 Website 💻 GitHub

  • apm-server

    APM Server

    🌐 Website 💻 GitHub

  • App.Metrics

    App Metrics is an open-source and cross-platform .NET library used to record and report metrics within an application.

    🌐 Website 💻 GitHub

  • Glowroot

    Easy to use, very low overhead, Java APM

    🌐 Website 💻 GitHub

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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