Open-Source Rankings

Ordered by GitHub stars first, then ToolVitals score to break ties between similarly adopted projects.

# Tool Health Shipping Stars Score Status
01 Netdata
The fastest path to AI-powered full stack observability, even for lean teams.
88 72 78.6k 81 Active
02 Prometheus
The Prometheus monitoring system and time series database.
92 88 63.8k 90 Active
03 WorldMonitor
Real-time global intelligence dashboard. AI-powered news aggregation, geopolitical monitoring, and infrastructure tracking in a unified situational awareness interface
91 91 52.9k 91 Active
04 RuView
π RuView: WiFi DensePose turns commodity WiFi signals into real-time human pose estimation, vital sign monitoring, and presence detection — all without a single pixel of video.
95 100 50.5k 97 Active
05 Sentry
Developer-first error tracking and performance monitoring
97 88 43.7k 93 Active
06 Glances
Glances an Eye on your system. A top/htop alternative for GNU/Linux, BSD, Mac OS and Windows operating systems.
87 72 32.4k 80 Active
07 changedetection.io
Best and simplest tool for website change detection, web page monitoring, and website change alerts. Perfect for tracking content changes, price drops, restock alerts, and website defacement monitoring—all for free or enjoy our SaaS plan!
95 100 31.3k 97 Active
08 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
100 100 26.7k 100 Active
09 osquery
SQL powered operating system instrumentation, monitoring, and analytics.
84 56 23.2k 71 Active
10 Beszel
Lightweight server monitoring with historical data, docker stats, and alerts.
87 72 21.4k 80 Active
11 OpenObserve
OpenObserve is an open-source observability platform for logs, metrics, traces, and frontend monitoring. A cost-effective alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.
100 100 18.6k 100 Active
12 Upptime
⬆️ GitHub Actions uptime monitor & status page by @AnandChowdhary
81 0 17k 45 Warning
13 VictoriaMetrics
VictoriaMetrics: fast, cost-effective monitoring solution and time series database
100 100 16.9k 100 Active
14 RagaAI Catalyst
Python SDK for Agent AI Observability, Monitoring and Evaluation Framework. Includes features like agent, llm and tools tracing, debugging multi-agentic system, self-hosted dashboard and advanced analytics with timeline and execution graph view
48 0 16.1k 26 Critical
15 Cachet
🚦 Cachet, the open-source, self-hosted status page system.
64 0 15k 35 Warning
16 Nightingale
Nightingale is to monitoring and alerting what Grafana is to visualization.
81 0 13k 45 Warning
17 Keep
The open-source AIOps and alert management platform
84 62 11.7k 74 Active
18 Pyroscope
Continuous Profiling Platform. Debug performance issues down to a single line of code
90 100 11.4k 94 Active
19 Quickwit
Cloud-native search engine for observability. An open-source alternative to Datadog, Elasticsearch, Loki, and Tempo.
88 72 11.1k 81 Active
20 Gatus
Automated developer-oriented status page with alerting and incident support
84 38 10.8k 63 Warning
21 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. Don't be shy, join here: https://discord.com/invite/NAb6H3UTjK :)
85 72 9.7k 79 Active
22 HyperDX
Resolve production issues, fast. An open source observability platform unifying session replays, logs, metrics, traces and errors powered by ClickHouse and OpenTelemetry.
92 100 9.5k 96 Active
23 highlight.io
highlight.io: The open source, full-stack monitoring platform. Error monitoring, session replay, logging, distributed tracing, and more.
74 0 9.2k 41 Warning
24 OpenStatus
🫖 Status page with uptime monitoring & API monitoring as code 🫖
79 0 8.6k 43 Warning
25 HertzBeat
An AI-powered next-generation open source real-time observability system.
82 38 7.2k 62 Warning
26 OpenLLMetry
Open-source observability for your GenAI or LLM application, based on OpenTelemetry
97 100 7k 98 Active
27 WatchYourLAN
Lightweight network IP scanner written in Go. With notifications, history, export to Grafana
36 0 6.9k 20 Critical
28 OneUptime
Complete open-source monitoring and observability platform.
97 100 6.9k 98 Active
29 Pulse
Real-time monitoring for Proxmox, Docker, and Kubernetes with AI-powered insights, smart alerts, and a beautiful unified dashboard
91 100 5.5k 95 Active
30 sitespeed.io
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 browsers in various environments.
72 62 5k 68 Warning
31 Kener
Stunning status pages, batteries included!
80 100 4.9k 89 Active
32 Scanopy
Network diagrams that update themselves
92 100 4.8k 96 Active
33 Uptrace
Open source APM: OpenTelemetry traces, metrics, and logs
84 72 4.2k 79 Active
34 Claude DevTools
The missing DevTools for Claude Code — inspect session logs, tool calls, token usage, subagents, and context window in a visual UI. Free, open source.
76 100 3.2k 87 Active
35 Tianji
Tianji: Insight into everything, Website Analytics + Uptime Monitor + Server Status. not only another GA alternatives
91 100 3k 95 Active
36 Robusta
Better Prometheus alerts for Kubernetes - smart grouping, AI enrichment, and automatic remediation
91 100 3k 95 Active
37 CState
🔥 Open source static (serverless) status page. Uses hyperfast Go & Hugo, minimal HTML/CSS/JS, customizable, outstanding browser support (IE8+), preloaded CMS, read-only API, badges & more.
42 0 2.9k 23 Critical
38 Laminar
Laminar - open-source observability platform purpose-built for AI agents. YC S24.
97 100 2.8k 98 Active
39 CheckCle
CheckCle is a self-hosted, open-source monitoring platform for seamless, real-time full-stack systems, applications, and infrastructure. It provides real-time uptime monitoring, distributed checks, incident tracking, and alerts. All deployable anywhere.
55 0 2.7k 30 Warning
40 OpenLIT
Open source platform for AI Engineering: OpenTelemetry-native LLM Observability, GPU Monitoring, Guardrails, Evaluations, Prompt Management, Vault, Playground. 🚀💻 Integrates with 50+ LLM Providers, VectorDBs, Agent Frameworks and GPUs.
92 100 2.4k 96 Active
41 Parseable
Parseable is an observability datalake built from first principles.
89 88 2.4k 89 Active
42 Checkmk
Checkmk - Best-in-class infrastructure & application monitoring
73 0 2.3k 40 Warning
43 Open Scouts
🔥 AI-powered web monitoring platform. Create automated scouts that search the web and send email alerts when they find what you're looking for.
55 0 1.3k 30 Warning
44 LLMGateway
Route, manage, and analyze your LLM requests across multiple providers with a unified API interface.
79 0 1.2k 43 Warning
45 Peekaping
Open Source Uptime Kuma Alternative
70 56 1.1k 64 Warning
46 Performance Co-Pilot
Performance Co-Pilot
85 72 1.1k 79 Active
47 Percona PMM
Percona Monitoring and Management: an open source database monitoring, observability and management tool
86 56 1k 72 Active
48 Lunalytics
🚀 Open source monitoring tool built with Node.js
70 47 726 60 Warning
49 TraceRoot
TraceRoot - open-source observability and self-healing layer for AI agents. YC S25
76 47 528 63 Warning
50 Kuvasz
Kuvasz (pronounce as [ˈkuvɒs]) is an open-source uptime and SSL monitoring service, with multiple notification channels, status pages, IAC support via YAML, Prometheus integration, a complete REST API and many more!
87 72 513 80 Active
51 Monigo
MoniGo is a performance monitoring library for Go apps, offering real-time insights into service-level and function-level metrics. With an intuitive UI, it enables developers to track and optimize performance. Get your Go app's dashboard up in just 10 seconds!
77 38 411 59 Warning
52 LogTide
🛡️ Open-source, self-hosted log management. Privacy-first alternative to Datadog & ELK. Lightweight, GDPR-compliant, and deployed in minutes with Docker.
81 100 398 90 Active
53 OpenITCOCKPIT
openITCOCKPIT is an Open Source system monitoring tool built for different monitoring engines like Nagios, Naemon and Prometheus.
86 55 374 72 Active
54 WireQuery
Session replay and API exploration tool.
6 0 305 3 Critical
55 Maintenant
Drop a container. Your stack is monitored.
94 100 178 97 Active
56 Centreon
Centreon is a network, system and application monitoring tool. Centreon is the only AIOps Platform Providing Holistic Visibility to Complex IT Workflows from Cloud to Edge.
89 100 150 94 Active
57 Aurora
Open-source agentic incident management and root cause analysis platform for SREs.
89 100 150 94 Active
58 NodeGet
Next-generation server monitoring and management tools
76 56 42 67 Active

Evidence Watch

Tracked tools with useful public signals but no verdict score yet.