Top Open Source Performance Monitoring (APM) Tools in 2026
A curated collection of the 14 best free and open-source Performance Monitoring (APM) tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.
NetData
Real-time infrastructure monitoring with AI troubleshooting
Stars80,318Last commit10d agoLicenseGPL-3.0
Uptrace
OpenTelemetry-native observability platform
Stars4,270Last commit2mo agoLicenseAGPL-3.0
SigNoz
Open-source Datadog alternative for full-stack observability
Stars31,936Last commit10d agoLicenseOpen SourceSentry
Error tracking and performance monitoring for developers
Stars44,628Last commit10d agoLicenseOpen Source
Logfire
AI observability platform for LLMs and apps
Stars4,442Last commit11d agoLicenseMITOpenReplay
Open-source session replay and product analytics platform you can self-host for complete control over data security, privacy, and compliance.
Stars12,583Last commit17d agoLicenseOpen Source
OpenObserve
Open source observability platform for AI era
Stars21,502Last commit10d agoLicenseAGPL-3.0
OneUptime
Open-source observability & incident management
Stars7,523Last commit10d agoLicenseApache-2.0
Maple
Open-source observability for traces, logs & metrics
Stars1,728Last commit10d agoLicenseOpen Source
HyperDX
Open source observability platform for logs, traces and errors
Stars9,865Last commit10d agoLicenseMITHighlight
Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.
Stars9,370Last commit17d agoLicenseOpen SourceGrafana
Grafana unifies metrics, logs, traces, profiles, and business data into one OpenTelemetry-native platform with AI-assisted root cause analysis and adaptive cost controls.
Stars76,446Last commit10d agoLicenseAGPL-3.0Coroot
eBPF-powered AI observability platform
Stars7,891Last commit19d agoLicenseApache-2.0Checkmate
Open-source infrastructure monitoring tool
Stars10,756Last commit11d agoLicenseAGPL-3.0
