Grafana is the open and composable observability platform for metrics, logs, and traces, used by developers and IT operations teams for monitoring and analysis.

OpenTelemetry is an open-source telemetry tool for software performance analysis.

Mathias Bynens is a web standards enthusiast and Google Chrome engineer focusing on advanced JavaScript, CSS, performance, and Unicode topics.

Middleware is a cloud observability platform that revolutionizes issue debugging for dev and ops teams by providing a unified view of metrics, logs, traces, and events with AI-driven insights for improved infrastructure and application performance.

Langfuse is an open-source LLM engineering platform offering traces, evals, prompt management, and metrics to debug and improve LLM applications.

SigNoz is an open-source observability tool for APM, logs, traces, metrics, exceptions, and alerts.

Lightrun is a developer observability platform for securely and dynamically instrumenting logs, metrics, and traces in live production applications to reduce MTTR.

Last9 is an observability platform for developers, SREs, and AI agents, providing unified visibility for metrics, logs, traces, and APM.

Iberia Traces is a geospatial technology company specializing in cultural mapping, GIS for heritage, and augmented reality solutions for tourism and asset management.

TracesOfWar.nl is the best resource for history enthusiasts and is used by educators and students alike.