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Open Source Performance Monitoring (APM) Tools

A curated collection of the best open source application Performance Monitoring tools for tracking application behavior..

Grafana

Unified observability for metrics, logs, traces, and more

  • Stars

    77,781

  • Last commit

    5 hours ago

  • License

    AGPL-3.0
Grafana unifies metrics, logs, traces, profiles, and business data into one OpenTelemetry-native platform with AI-assisted root cause analysis and adaptive cost controls.

Open Source Alternative to:

DataDog

NetData

Real-time monitoring for systems and applications

  • Stars

    81,317

  • Last commit

    5 hours 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

Sentry

Real-time error tracking and performance monitoring

  • Stars

    45,736

  • Last commit

    5 hours ago

  • License

    Unknown
Detect, diagnose, and resolve software issues quickly with powerful error tracking, performance monitoring, and release management.

Open Source Alternative to:

DataDog

SigNoz

Open-source observability platform for cloud-native apps

  • Stars

    32,551

  • Last commit

    5 hours ago

  • License

    MIT
Comprehensive monitoring and troubleshooting solution for microservices architectures, offering metrics, traces, and logs in a single pane.

Open Source Alternative to:

DataDog

Apache SkyWalking

Distributed tracing, metrics, logs, and GenAI monitoring in one

  • Stars

    24,995

  • Last commit

    1 day ago

  • License

    Apache-2.0
Open source observability platform covering distributed tracing, metrics, logs, profiling, and LLM cost tracking across 10+ languages with eBPF support on Kubernetes.

Open Source Alternative to:

DataDog

OpenObserve

Petabyte-scale observability, without the massive bill.

  • Stars

    22,943

  • Last commit

    5 hours ago

  • License

    AGPL-3.0
Monitor logs, metrics, and traces with an open-source observability platform. Achieve petabyte scale with 140x lower storage costs and high performance.

Open Source Alternative to:

DataDog

Checkmate

Beautiful open-source monitoring for modern infrastructure

  • Stars

    11,037

  • Last commit

    8 hours ago

  • License

    AGPL-3.0
Monitor servers, websites, Docker containers, and infrastructure with real-time insights, instant alerts, and powerful analytics. Self-hosted solution.

Open Source Alternative to:

BetterStack

OpenReplay

Self-hosted session replay with complete data control

  • Stars

    13,119

  • Last commit

    6 hours ago

  • License

    AGPL-3.0
Open-source session replay and product analytics platform you can self-host for complete control over data security, privacy, and compliance.

Open Source Alternative to:

Mixpanel

HyperDX

Full-stack observability without the enterprise price tag

  • Stars

    10,001

  • Last commit

    10 hours ago

  • License

    MIT
Open source observability platform unifying session replays, logs, traces, metrics and errors. Fast search, automatic clustering, $0.40/GB pricing.

Open Source Alternative to:

DataDog

Highlight

Real-time observability for modern web applications

  • Stars

    9,387

  • Last commit

    17 days ago

  • License

    Apache-2.0
Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.

Open Source Alternative to:

DataDog

OneUptime

Comprehensive monitoring and incident management platform

  • Stars

    7,802

  • Last commit

    5 hours ago

  • License

    Apache-2.0
All-in-one solution for uptime monitoring, incident management, and status pages to keep your services running smoothly

Open Source Alternative to:

DataDog

Coroot

Full-stack observability without code changes

  • Stars

    8,004

  • Last commit

    4 days ago

  • License

    Apache-2.0
Coroot simplifies system monitoring by providing metrics, logs, traces, and profiling with zero instrumentation, leveraging eBPF technology.

Open Source Alternative to:

Splunk

Logfire

AI
Powerful observability made simple for developers

  • Stars

    4,540

  • Last commit

    2 days ago

  • License

    MIT
Logfire offers intuitive observability tools for Python applications, combining logs, profiling, and telemetry in one platform.

Open Source Alternative to:

DataDog

Uptrace

Open source observability platform for modern applications

  • Stars

    4,311

  • Last commit

    18 days ago

  • License

    AGPL-3.0
Uptrace is an OpenTelemetry-based platform that integrates traces, metrics, and logs to help monitor and optimize complex distributed systems.

Open Source Alternative to:

DataDog

Maple

OpenTelemetry observability with traces, logs, and metrics

  • Stars

    Stars growing over the last 30 days1,952

  • Last commit

    6 hours ago

  • License

    Unknown
Observability platform built on OpenTelemetry and ClickHouse. Collect, visualize, and query distributed traces, logs, and metrics, with an MCP server for AI agent diagnostics.

Open Source Alternative to:

DataDog
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