micrometer-metrics/micrometer

:chart_with_upwards_trend: Capturing JVM- and application-level metrics. So you know what's going on.

The Prometheus monitoring system and time series database.

An AI-powered next-generation open source real-time observability system.

APM, Application Performance Monitoring System

OpenTelemetry JavaScript Client

SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents. Get logs, metrics, and traces in one tool with features like APM, distributed tracing, log management, infra monitoring, etc. Combined with SigNoz MCP and a native AI teammate (in SigNoz Cloud) it helps you build more resilient apps.

The fastest path to AI-powered full stack observability, even for lean teams.

Open source observability platform for logs, metrics, traces, RUM (web, android, ios), Session replay, pipelines, SLO and LLM observability. A sophisticated, simple and highly performant alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.

Observe any stack, any service and any data, using any UI components you prefer, never missing any X factors and resolve them before they become real problems.