85.1k
Uptime Kuma
A fancy self-hosted monitoring tool for keeping tabs on website uptime and performance.
🔎
Monitoring⚙️
DevOps🏠
Self-Hosted
Best Open-Source Monitoring Tools in 2026
A curated list of the best, top, and most popular open-source monitoring tools available right now. Showing the top 22 of 22 monitoring tools in our directory, ranked by GitHub stars.
- 78.4k
Netdata
An advanced monitoring software providing real-time performance and health monitoring for your infrastructure.
🔎 Monitoring⚙️ DevOps🏎️ Performance - 73.2k
Grafana
The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.
🔎 Monitoring📈 Visualization📊 Analytics - 63.5k
Prometheus
The Prometheus monitoring system and time series database for collecting and storing metrics as time series data.
🔎 Monitoring🛠️ Tools🔨 Utils🔬 Data Science - 62.7k
Traefik
A powerful Cloud Native Application Proxy designed for ease of use and automation. It seamlessly integrates with your infrastructure components and configures itself automatically and dynamically.
⚙️ DevOps🔁 API🔎 Monitoring🏎️ Performance - 49.1k
Huginn
Create agents that watch for certain triggers and perform automated actions, making it a personal IFTTT. Your agents are standing by to automate tasks on your behalf.
🏠 Self-Hosted🔁 API🔎 Monitoring - 43.6k
Sentry
Developer-first error tracking and performance monitoring to help you improve your software applications' reliability and speed.
🔎 Monitoring🏎️ Performance👨💻 Development⚙️ DevOps - 31.4k
Influxdb
Scalable datastore for metrics, events, and real-time analytics. Optimized for time-series data.
💾 Database📊 Analytics🔎 Monitoring - 31.1k
Changedetection.io
The best and simplest open-source web page change detection and notification service. Monitor changes to websites, get restock alerts, and price change notifications. Designed for simplicity and free to use.
🔎 Monitoring⚙️ DevOps🌐 Web - 28.0k
Loki
A horizontally-scalable, highly-available log aggregation system inspired by Prometheus, tailored for on-demand, distributed log processing.
📊 Analytics🔎 Monitoring⚙️ DevOps🏠 Self-Hosted - 20.9k
Signoz
SigNoz is an open-source observability platform native to OpenTelemetry, providing logs, traces, and metrics in a single application. It serves as an open-source alternative to DataDog, NewRelic, and others, offering comprehensive Application Performance Monitoring (APM) and Observability features.
🔎 Monitoring🏎️ Performance⚙️ DevOps🛠️ Tools - 20.8k
Beszel
Lightweight server monitoring hub with historical data, Docker stats, and alerts for efficient system tracking and management.
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- 18.8k
Opik
Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.
🔎 Monitoring🤖 AI🛠️ Tools - 18.5k
OpenObserve
A highly efficient and cost-effective alternative to Elasticsearch, Splunk, and Datadog, designed for handling logs, metrics, traces, Real User Monitoring, error tracking, and session replay at a petabyte scale.
📊 Analytics🔎 Monitoring⚙️ DevOps🏎️ Performance - 9.2k
Highlight
The open source, full-stack monitoring platform. Provides comprehensive error monitoring, session replay, logging, distributed tracing, and more for robust monitoring solutions.
📊 Analytics🔎 Monitoring🏎️ Performance🛠️ Tools - 8.7k
Neohtop
Blazing-fast and modern system monitoring tool for desktop platforms, built with Rust, Tauri, and Svelte, offering real-time insights and an intuitive user interface.
🔎 Monitoring💻 Desktop🦀 Rust🛠️ Tools - 6.9k
Openstatus
A robust open-source synthetic monitoring platform designed to continuously check the uptime of system services and applications.
🔎 Monitoring⚙️ DevOps🛠️ Tools - 4.5k
Checkmate
Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations.
🔎 Monitoring📈 Visualization🏎️ Performance⚙️ DevOps - 3.4k
Perforator
Perforator is a cluster-wide continuous profiling tool designed for large data centers to facilitate performance analysis and optimization.
🏎️ Performance🔎 Monitoring⚙️ DevOps🛠️ Tools - 1.9k
SerpBear
SerpBear is a Search Engine Position Rank Tracking App that helps you monitor and track search engine rankings over time.
📊 Analytics🛠️ Tools🔎 Monitoring🌐 Web - 933
React Native Performance
A robust performance monitoring tool designed specifically for React Native apps, enabling developers to optimize and analyze their apps' performance efficiently.
🔎 Monitoring⚛️ React Native👨💻 Development - 540
Tenderly-cli
A comprehensive CLI tool for smart contract error tracking, monitoring, and alerting in blockchain environments.
⌨️ CLI🔎 Monitoring🔒 Security⛓️ Web3 & Blockchain
Frequently asked questions
What is the best open-source monitoring tool in 2026?
Uptime Kuma is the most popular by GitHub stars right now. A fancy self-hosted monitoring tool for keeping tabs on website uptime and performance.
Are these monitoring tools free?
Yes. Every tool on this list is open source and free to use in your own projects. Many can be self-hosted.
How is this list ranked?
Tools are ranked by GitHub star count, a strong proxy for community adoption and active maintenance. Star counts are refreshed regularly.
Stay Updated!
Get notified about new tools and updates to existing ones.