Open source metrics projects
Every project in the registry tagged metrics, ranked by real GitHub adoption.
Unified observability for metrics, logs, traces, and more
Open source metrics collection, storage, and alerting
Open-source observability platform for cloud-native apps
Purpose-built time series database for real-time systems
Time-series database and historian for industrial data
Distributed tracing, metrics, logs, and GenAI monitoring in one
Collect, transform, and route logs and metrics in one tool
Petabyte-scale observability, without the massive bill.
An opinionated GoLang framework for accelerated microservice development. Built in support for databases and observability.
High-performance time series database for metrics and logs
Agent for collecting, processing, aggregating, and writing metrics, logs, and other arbitrary data.
📊 An infographics generator with 30+ plugins and 300+ options to display stats about your GitHub account and render them as SVG, Markdown, PDF or JSON!
Highly available Prometheus setup with long term storage capabilities. A CNCF Incubating project.
Exporter for machine metrics
Resilience4j is a fault tolerance library designed for Java8 and functional programming
Full-stack observability without the enterprise price tag
A declarative JavaScript library for application development using cloud services.
Real-time observability for modern web applications
Privacy-focused analytics without the complexity
Full-stack observability without code changes
OpenTelemetry Collector
Monitor LLM performance with open-source observability
An AI-powered next-generation open source real-time observability system.
Unified observability database for metrics, logs, and traces
OpenTelemetry Go API and SDK
Enterprise monitoring for networks, apps, and infrastructure
Add-on agent to generate and expose cluster-level metrics.
A highly scalable real-time graphing system
Native Operating System and Hardware Information
sitespeed.io is an open-source tool for comprehensive web performance analysis, enabling you to test, monitor, and optimize your website’s speed using real brow
An application observability facade for the most popular observability tools. Think SLF4J, but for observability.
M3 monorepo - Distributed TSDB, Aggregator and Query Engine, Prometheus Sidecar, Graphite Compatible, Metrics Platform
Jupiter: Governance-oriented Microservice Framework.
Powerful observability made simple for developers
Prometheus instrumentation library for Python applications
Hubble - Network, Service & Security Observability for Kubernetes using eBPF
Python package for the evaluation of odometry and SLAM
Open source observability platform for modern applications
Main repository for Datadog Agent
The OpenTelemetry .NET Client
Distributed tracing without code changes. 🚀 Instantly monitor any application using OpenTelemetry and eBPF
Visualise Go runtime metrics in real time
High performance Java APM. Powered by ASM. Try it. Test it. If you feel its better, use it.
OpenTelemetry JavaScript Client
Prometheus client for node.js
LinDB is a scalable, high performance, high availability distributed time series database.
JavaMelody : monitoring of JavaEE applications
An open source real-time network topology and protocols analyzer
OpenTelemetry Python API and SDK
Beautiful and understandable static analysis tool for PHP
Parseable is an open source, unified infrastructure observability platform built in Rust on a data lake architecture. It tracks logs, metrics, traces, and event
🦥 Easy and simple Prometheus SLO (service level objectives) generator
Prometheus instrumentation library for JVM applications
Headless Chromium-based web performance metrics collector and monitoring tool
Open source monitoring for complex IT infrastructure
SNMP Exporter for Prometheus
Realtime dashboard with metrics, request logging, plus storage, OS and VM insights
Monoscope lets you ingest and explore your logs, traces and metrics. We store these in S3 compatible buckets. Query in natural language via LLMs.
Fast scalable time series database
The only tool you need to know what is happening and how to fix it.
Related tags
Frequently asked questions
How many open source metrics projects are there?
This registry tracks 90 projects tagged metrics, with 655,293 GitHub stars between them. The most-adopted is Grafana at 77,638 stars.
Are these metrics projects free to use?
Yes — 88 of the 90 carry an explicit open-source licence across 7 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which metrics project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these metrics projects still maintained?
78 of the 90 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.