Best Open Source Monitoring Tools

Open source monitoring tools, ranked by score and analyzed honestly. Part of our Observability coverage.

Ranked by score. Updated weekly.

1

Uptime Kuma

86

Self-hosted monitoring tool

88,521JavaScriptpermissive
2

Prometheus

86

Monitoring system and time series database

64,805Gopermissive
3

SkyWalking

85

APM and monitoring system

24,849Javapermissive
4

Jaeger

85

CNCF distributed tracing platform

22,935Gopermissive
5

Zipkin

85

Distributed tracing system

17,435Javapermissive
6

Thanos

85

Highly available Prometheus setup

14,127Gopermissive
7

VictoriaMetrics

83

Fast monitoring and time series DB

17,228Gopermissive
8

systeminformer

83

A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware. Brought to you by Winsider Seminars & Solutions, Inc. @ http://www.windows-internals.com

15,212Cpermissive
9

Grafana

81

Open observability and data visualization platform

75,119TypeScriptstrong-copyleft
10

SigNoz

81

OpenTelemetry-native observability with logs, traces, and metrics

27,503TypeScriptpermissive
11

prometheus-operator

81

Prometheus Operator creates/configures/manages Prometheus clusters atop Kubernetes

9,944Gopermissive
12

OpenTelemetry Collector

81

Vendor-agnostic telemetry collection

7,180Gopermissive
13

Netdata

79

Real-time performance and health monitoring

79,434Ccopyleft
14

Highlight

77

Full-stack monitoring: error monitoring, session replay, logging

9,304TypeScriptpermissive
15

Crucix

74

Your personal intelligence agent. Watches the world from multiple data sources and pings you when something changes.

10,364JavaScriptstrong-copyleft
16

Sentry

71

Developer-first error tracking and performance monitoring

44,181Pythonsource-available
17

keep

71

The open-source AIOps and alert management platform

11,985Pythonunknown
18

graylog2-server

67

Free and open log management

8,072Javaunknown
19

Uptrace

63

Open source APM with OpenTelemetry traces, metrics, and logs

4,230Gostrong-copyleft
20

cachet

61

🚦 Cachet, the open-source, self-hosted status page system.

15,107PHPunknown

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