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Category

Monitoring & Observability

Metrics, logs, traces, and error reporting for systems in production.

60 products, 56 Projects: 48 open source, 0 source-available, 8 unresolved-license

Datadog

Datadog

Infrastructure monitoring, logs, and tracing in one platform

CompanyDatadog
Since2010
PricingPaid

Datadog's value is correlation. A latency spike on a dashboard, the traces behind it, and the logs from the affected hosts are one or two clicks apart, which is the difference between a ten minute incident and an hour.

Sentry

Sentry

Error tracking and performance monitoring for applications

CompanyFunctional Software
Since2012
PricingFreemium

Sentry is the tool most teams install first and remove last. An unhandled exception arrives with a stack trace, the release that introduced it, the users affected, and the breadcrumbs leading up to it.

New Relic

New Relic

Application performance monitoring with usage based pricing

CompanyNew Relic
Since2008
PricingFree

New Relic was the application performance monitoring product for a generation of web applications, and its repricing to per-user plus per-gigabyte was an explicit attempt to answer the complaint about host based billing.

Alternative toDatadog
Netdata

NetdataOpen

Real-time infrastructure monitoring with per-second metrics and alerts

Stars80.9K
Commitjust now
LicenseGPL-3.0

Netdata is a self-hosted monitoring agent that collects per-second metrics from systems, containers, and applications, with built-in dashboards, alerts, and anomaly detection.

Alternative toDatadog
Uptime Kuma

Uptime KumaOpen

Self-hosted uptime monitoring with a clean status page

Stars76.4K
Commit4d ago
LicenseMIT

Uptime Kuma monitors HTTP endpoints, TCP ports, containers, and certificates, and notifies through almost a hundred channels. Setup is a container and a few minutes.

Alternative toDatadog
Statuspage

Statuspage

Hosted status pages for real-time incident communication

CompanyAtlassian
Since2013
PricingFreemium

Statuspage is Atlassian's hosted status page service for sharing real-time service status, incidents, and maintenance with customers.

Alternative toCachetUptime Kuma
Grafana

GrafanaOpen

Dashboards over whatever data you already store

Stars71.2K
Commit8h ago
LicenseAGPL-3.0

Grafana is the visualisation layer that sits above other systems rather than a monitoring stack of its own. It queries Prometheus, Loki, PostgreSQL, ClickHouse, and dozens of other sources, and puts them on the same dashboard.

Alternative toDatadog
Prometheus

PrometheusOpen

Open-source metrics monitoring with PromQL queries and alerting

Stars66.5K
Commitjust now
LicenseApache-2.0

Prometheus is an open-source monitoring system that scrapes metrics into a dimensional time-series database and evaluates PromQL rules for alerting.

Alternative toNagiosGrafana
Langfuse

LangfuseAIOpen

Open-source LLM observability, evals, and prompt management

Stars35.3K
Commitjust now
LicenseMIT

Langfuse is an open-source platform for tracing, evaluating, and improving LLM applications and AI agents, with prompt management and experiments built in.

Alternative toArize Phoenix
SigNoz

SigNozOpen

Open-source observability with logs, metrics, and traces in one tool

Stars32.3K
Commitjust now
LicenseMIT

SigNoz is an OpenTelemetry-native observability platform that combines logs, metrics, and traces with APM, dashboards, and alerts in one tool.

Alternative toDatadog
ProjectDiscovery

ProjectDiscoveryOpen

Open-source vulnerability scanner with template-powered detection

Stars32K
Commitjust now
LicenseMIT

ProjectDiscovery is an open-source vulnerability scanner built on the Nuclei YAML template engine that finds exploitable issues across apps, APIs, networks, DNS, and cloud.

Alternative toOpengrep
InfluxDB

InfluxDBOpen

Open time-series database for metrics, events, and IoT telemetry

Stars31.8K
Commitjust now
LicenseApache-2.0

InfluxDB is an open time-series database for metrics, events, and IoT telemetry, queried with SQL and InfluxQL and run self-managed or as a managed cloud.

TDengine

TDengineOpen

High-performance open-source time-series database for Industrial IoT

Stars25.2K
Commitjust now
LicenseAGPL-3.0

TDengine is an open-source, cloud-native time-series database for IoT and industrial workloads, with built-in caching, stream processing, and data subscription in one platform.

Alternative toInfluxDB
TimescaleDB

TimescaleDBOpen

PostgreSQL extension for time-series analytics

Stars23.7K
Commitjust now
LicenseApache-2.0

TimescaleDB is a PostgreSQL extension for high-performance real-time analytics on time-series and event data, available self-hosted and as managed Tiger Cloud.

Alternative toInfluxDB
Vector

VectorOpen

High-performance observability pipeline for logs and metrics

Stars22.7K
Commitjust now
LicenseMPL-2.0

Vector is a Rust observability data pipeline that collects, transforms, and routes logs and metrics from dozens of sources to any vendor sink.

Alternative toLogstash
OpenObserve

OpenObserveOpen

Open-source observability for logs, metrics, traces and RUM in one binary

Stars22.3K
Commitjust now
LicenseAGPL-3.0

OpenObserve is an open-source observability platform that unifies logs, metrics, traces, RUM and AI model telemetry in one Rust binary backed by object storage.

VictoriaMetrics

VictoriaMetricsOpen

Fast, cost-effective open-source time-series database and monitoring

Stars17.9K
Commitjust now
LicenseApache-2.0

VictoriaMetrics is an open-source time-series database and monitoring solution that ingests Prometheus, InfluxDB, OpenTelemetry and Graphite data and queries it with PromQL-compatible MetricsQL.

Alternative toPrometheus
Cachet

Cachet

Self-hosted status page system for incident communication

Stars15.3K
Commitjust now
LicenseCachet License

Cachet is a self-hosted status page system for publishing component status, incidents, and scheduled maintenance to customers.

Logstash

LogstashOpen

Open-source data pipeline that ingests, transforms, and ships logs and events

Stars15K
Commitjust now
LicenseApache-2.0

Logstash is a free open-source data collection engine from Elastic that ingests, transforms, and ships logs and events through real-time pipelines.

Alternative toElasticsearch
OpenSearch

OpenSearchOpen

Apache 2.0 search and analytics suite with AI-ready retrieval

Stars13.8K
Commitjust now
LicenseApache-2.0

OpenSearch is an Apache 2.0 search and analytics suite for ingesting, searching, visualizing, and analyzing data at scale, with vector search for AI applications.

Alternative toElasticsearchAlgolia
OpenReplay

OpenReplay

Self-hosted session replay and product analytics for debugging UX issues

Stars13K
Commitjust now
LicenseAGPL-3.0-only (core default; MIT parts; proprietary ee/)

OpenReplay is a self-hosted session replay and product analytics platform that records user sessions with DevTools data to reproduce issues.

Alternative toHighlight
Keep

KeepAIOpen

Open-source AIOps for alert correlation, deduplication, and automated remediation

Stars12.4K
Commitjust now
LicenseMIT

Keep is an open-source AIOps platform that aggregates alerts from 90+ providers, deduplicates them with AI, and automates remediation via YAML or visual workflows.

Alternative toGrafana
Gatus

GatusOpen

Self-hosted endpoint monitoring with status pages

Stars12.3K
Commitjust now
LicenseApache-2.0

Gatus is a self-hosted monitor that probes HTTP endpoints, DNS records, and other services on a schedule and publishes the results on a status page.

Alternative toUptime Kuma
Great Expectations

Great ExpectationsOpen

Open-source data quality tests and docs for pipelines

Stars11.9K
Commitjust now
LicenseApache-2.0

Great Expectations is an Apache-2.0 licensed Python framework for testing data quality with Expectations, Checkpoints, and auto-generated Data Docs.

Alternative toElementary Data