Open Source Monitoring & Observability Tools using Node.js

A curated collection of the best free and open source tools for knowing what a system is doing, covering metrics, logs, traces, uptime checks, dashboards and alerting using Node.js.

Uptime Kuma

Self-hosted monitoring tool that checks whether your sites, servers and containers are up and tells you the moment they are not.

Alternative to:

UptimeRobot

Self-hosted uptime monitoring with a clean dashboard

Stars
93,010
Forks
8,626
Last commit
21 hours ago

Elasticsearch

Distributed search and analytics engine and vector database for full text search, logs, metrics, security data and retrieval augmented generation.

Alternative to:

Splunk

The leading distributed search and analytics engine

Stars
78,421

Prometheus

A monitoring system that scrapes time series from configured targets, evaluates rules and fires alerts, standard equipment for cloud native operations.

Alternative to:

Datadog

Open source metrics collection, storage, and alerting

Stars
66,820

Sentry

Debugging platform that helps developers detect, trace and fix issues in shipped code, with official SDKs for most languages and runtimes.

Alternative to:

Datadog

Real-time error tracking and performance monitoring

Stars
45,666

SigNoz

An OpenTelemetry-native observability platform keeping logs, metrics, traces, alerts and dashboards in one place instead of separate tools.

Alternative to:

Datadog

Open-source observability platform for cloud-native apps

Stars
32,473

OpenObserve

A single-binary observability platform for logs, metrics, traces and RUM, aimed at teams priced out of Datadog or Elasticsearch.

Alternative to:

Datadog

Petabyte-scale observability, without the massive bill.

Stars
22,532

Vector

Observability pipeline that collects, transforms and routes logs and metrics from any source to any vendor, for platform and infrastructure teams.

Alternative to:

Cribl Stream

Collect, transform, and route logs and metrics in one tool

Stars
22,777

VictoriaMetrics

Time series database and Prometheus replacement for teams storing large volumes of metrics without the memory and disk cost.

Alternative to:

Datadog

High-performance time series database for metrics and logs

Stars
17,926

Keep

An AIOps and alert management platform that deduplicates, correlates and automates alerts from every monitoring tool in one console.

Alternative to:

PagerDuty

Unify, automate, and elevate your monitoring workflow

Stars
12,452

Checkmate

A self-hosted uptime and infrastructure monitor with status pages and incident alerts, for teams watching servers they run themselves.

Alternative to:

UptimeRobot

Beautiful open-source monitoring for modern infrastructure

Stars
10,998

OpenReplay

Self-hosted session replay suite that shows developers what users did on a web app and what broke underneath.

Alternative to:

Hotjar

Self-hosted session replay with complete data control

Stars
13,057

Gatus

A developer-oriented health dashboard that runs HTTP, ICMP, TCP and DNS checks against your services and alerts before users notice.

Alternative to:

UptimeRobot

Advanced automated status page for real-time monitoring

Stars
12,428

HyperDX

An observability interface for ClickHouse that puts logs, metrics, traces, and session replays behind one search for engineers debugging production.

Alternative to:

Datadog

Full-stack observability without the enterprise price tag

Stars
9,974

OpenStatus

Status pages and uptime monitoring in one open source platform, for teams that would rather not wire two tools together.

Alternative to:

UptimeRobot

Status page and uptime monitoring for growing teams

Stars
9,237

Highlight

Fullstack monitoring for web teams, pairing session replay with error tracking, logs and traces behind a few lines of setup.

Alternative to:

Datadog

Real-time observability for modern web applications

Stars
9,385

Coroot

eBPF based observability that maps services and audits them automatically, for teams who cannot instrument every application by hand.

Alternative to:

Datadog

Full-stack observability without code changes

Stars
7,991

OneUptime

One platform for uptime monitoring, on-call, status pages, incidents, logs, traces and metrics, replacing a shelf of separate SaaS tools.

Alternative to:

Datadog

Comprehensive monitoring and incident management platform

Stars
7,765

GreptimeDB

A columnar database storing metrics, logs and traces on one engine, for teams running Prometheus, Loki and Elasticsearch side by side.

Alternative to:

Datadog

Unified observability database for metrics, logs, and traces

Stars
6,768

Scanopy

Scans a network on a schedule and models what is actually running, for teams tired of hand-drawn diagrams that go stale.

Alternative to:

Lucidchart

Auto-generated network diagrams that stay current

Stars
5,913

Kener

A lightweight status page system with monitors, incidents and maintenance windows, for teams that want a branded page quickly.

Alternative to:

UptimeRobot

Deploy a professional status page in minutes, no coding required

Stars
5,225

Logfire

Observability platform from the Pydantic team that wraps OpenTelemetry with Python-centric tracing and lets you query telemetry using standard SQL.

Alternative to:

Datadog

Powerful observability made simple for developers

Stars
4,523

Uptrace

OpenTelemetry-native APM that stores traces, metrics and logs in ClickHouse, giving teams one interface for monitoring and troubleshooting applications.

Alternative to:

Datadog

Open source observability platform for modern applications

Stars
4,307

Checkmk

IT infrastructure and application monitoring for physical, virtual, containerized and cloud environments, with a free community edition and commercial tiers.

Alternative to:

Datadog

Complete IT infrastructure monitoring made simple

Stars
2,623

Maple

Maple is an OpenTelemetry observability platform for traces, logs, and metrics, aimed at teams that want to run their own telemetry stack.

Alternative to:

Datadog

OpenTelemetry observability with traces, logs, and metrics

Stars
1,921

Bugsink

Self-hosted error tracking for teams already using Sentry SDKs, keeping stack traces, local variables, and user data on your own hardware.

Alternative to:

Sentry

Self-hosted error tracking for full control and scalability

Stars
2,154

Peekaping

Self-hosted uptime monitoring with an API-first Go server, status pages and more than twenty alert channels, aimed at DevOps teams.

Alternative to:

UptimeRobot

Self-hosted uptime monitoring you own and control

Stars
1,204

Temps

One self-hosted binary replaces the deployment platform, error tracker, analytics service, uptime monitor, email sender, and sandbox provider you pay for separately.

Alternative to:

Datadog

One self-hosted binary replaces Vercel, Sentry, and analytics tools

Stars
875

Wachd

Self-hosted alert intelligence that collects context around an incident and hands the on-call engineer a plain-English probable cause.

Alternative to:

PagerDuty

AI-powered root cause analysis for on-call alerts, self-hosted and air-gapped

Stars
42

EasyMonitor

Self-hosted uptime and performance monitoring with multi-region probes and public status pages, for teams that would rather not rent a watchdog.

Alternative to:

UptimeRobot

Self-hosted uptime monitoring that runs on your hardware, not their servers

Stars
84

StatusScout

Self-hosted monitoring for security headers, certificates, DNS and exposed files across your sites, alerting the moment a check starts failing.

Alternative to:

UptimeRobot

Complete website health monitoring and security scanning

Stars
16

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Open Source Monitoring & Observability Tools using Node.js

A curated collection of the best free and open source tools for knowing what a system is doing, covering metrics, logs, traces, uptime checks, dashboards and alerting using Node.js.

Uptime Kuma

Elasticsearch

Prometheus

Sentry

SigNoz

OpenObserve

Vector

VictoriaMetrics

Keep

Checkmate

OpenReplay

Gatus

HyperDX

OpenStatus

Highlight

Coroot

OneUptime

GreptimeDB

Scanopy

Kener

Logfire

Uptrace

Checkmk

Maple

Bugsink

Peekaping

Temps

Wachd

EasyMonitor

StatusScout

Uptime Kuma

Elasticsearch

Prometheus

Sentry

SigNoz

OpenObserve

Vector

VictoriaMetrics

Keep

Checkmate

OpenReplay

Gatus

HyperDX

OpenStatus

Highlight

Coroot

OneUptime

GreptimeDB

Scanopy

Kener

Logfire

Uptrace

Checkmk

Maple

Bugsink

Peekaping

Temps

Wachd

EasyMonitor

StatusScout

Grafana