# opentelemetry

CNCF vendor-neutral standard for distributed traces, metrics, and logs

OpenTelemetry is the CNCF standard for generating, collecting, and exporting telemetry data including distributed traces, metrics, and logs. It provides instrumentation SDKs for every major programming language, the OpenTelemetry Collector for data processing and routing, and semantic conventions that ensure consistent telemetry across services. The second most active CNCF project after Kubernetes.

ClickHouse-powered APM with 100% trace sampling and affordable retention

Uptrace is an OpenTelemetry-native APM platform that stores traces, metrics, and logs in ClickHouse for high-performance querying with 100% trace sampling. Unlike platforms that sample traces to control costs, Uptrace retains every trace for complete visibility into system behavior. Self-hosted under BSL license or available as a managed cloud service with affordable per-event pricing.

eBPF auto-instrumentation for OpenTelemetry without code changes

Odigos provides automatic OpenTelemetry instrumentation for Kubernetes applications using eBPF, requiring zero code changes or SDK integration. It detects running applications, identifies their programming language, and attaches appropriate instrumentation to generate distributed traces, metrics, and logs. CNCF project that routes telemetry to any OpenTelemetry-compatible backend including Jaeger, Grafana, and Datadog.

Open-source replacement for Datadog, PagerDuty, and StatusPage combined

OneUptime is an MIT-licensed observability platform that combines infrastructure monitoring, incident management, status pages, and APM in a single self-hosted solution. It replaces the need for separate Datadog, PagerDuty, and Atlassian StatusPage subscriptions. Features OpenTelemetry-native data ingestion, on-call scheduling, automated incident workflows, and public status page hosting.

Open-source AI observability platform for LLM tracing and evaluation

Phoenix by Arize is an open-source AI observability platform for tracing, evaluating, and debugging LLM applications. It captures prompt-response pairs, retrieval context, agent tool calls, and latency data through OpenTelemetry-based instrumentation. Provides experiment tracking, dataset management, and evaluation frameworks for systematically improving AI application quality. Over 9,200 GitHub stars.

Zero-instrumentation Kubernetes observability powered by eBPF

Coroot is an open-source observability platform that uses eBPF to automatically instrument Kubernetes applications without code changes. It provides application maps, latency analysis, log correlation, and continuous profiling with automatic anomaly detection. Replaces the need for manual instrumentation with agents that capture metrics, traces, and logs at the kernel level.

OpenTelemetry-native observability for LLM applications with evals and GPU monitoring

OpenLIT is an open-source AI engineering platform that provides OpenTelemetry-native observability for LLM applications. It combines distributed tracing, evaluation, prompt management, a secrets vault, and GPU telemetry in a single self-hostable stack. With 50+ integrations across LLM providers and frameworks, it lets teams monitor AI applications using their existing observability backends like Grafana, Datadog, or Jaeger.

Open-source observability platform unifying logs, traces, and session replays

HyperDX is an open-source observability platform that correlates session replays, logs, metrics, traces, and errors in a single interface powered by ClickHouse and OpenTelemetry. Acquired by ClickHouse in 2025, it now forms the visualization layer of ClickStack. It offers schema-agnostic querying on any ClickHouse cluster, intuitive full-text and property search syntax, and blazing-fast analytics. Available as a self-hosted Docker deployment or a managed cloud service with a free tier.