opentelemetry

traefik/traefik

A reverse proxy that auto-discovers your microservices — Traefik automatically detects services running in Docker, Kubernetes, Consul, Etcd or ECS and configures routing without manual rules. It supports Gateway API, Ingress and OpenTelemetry, making it useful for teams running dynamic container or cluster environments who want self-updating load balancing and TLS via Let's Encrypt.

The Cloud Native Application Proxy

jaegertracing/jaeger

Jaeger v2 rebuilds the tracing platform on OpenTelemetry collector — Jaeger v2 is now out, re-architecting the distributed tracing platform around the OpenTelemetry Collector. It ships as a single all-in-one Docker image with UI, collector and query built in, accepting OTLP traces over gRPC or HTTP for quick local testing and production deployments alike.

CNCF Jaeger, a Distributed Tracing Platform

openobserve/openobserve

A single-binary Datadog alternative claiming 140x lower storage costs — OpenObserve bundles logs, metrics, traces, RUM, session replay, pipelines, SLOs, and LLM observability into one cloud-native platform written in Rust. It positions itself as a simpler, petabyte-scale substitute for Datadog, Splunk, and Elasticsearch, deployable as a single binary with much lower storage overhead.

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.

VictoriaMetrics/VictoriaMetrics

A Prometheus-compatible time series database built for scale and cost — VictoriaMetrics is a fast, cost-effective time series database for monitoring, supporting PromQL, InfluxDB, Graphite and OpenTelemetry data. It ships as single-node or cluster deployments and is used in production by companies like Grammarly, Roblox, Wix and Spotify, making it a practical Prometheus/Thanos alternative for teams scaling observability.

VictoriaMetrics: fast, cost-effective monitoring solution and time series database

Effect-TS/effect

Effect hits LTS with 4.x, a stable base for TypeScript apps — Effect 4.x is now a long-term support release, giving teams a stable foundation for typed errors, dependency injection, structured concurrency, scheduling, tracing, and schema validation. It targets TypeScript 5.9+ with strict mode, and existing 3.x users get a migration guide for upgrading.

Build production-ready applications in TypeScript

open-telemetry/opentelemetry-collector

A vendor-neutral proxy for collecting and routing telemetry data — This is the core Collector for OpenTelemetry, offering a single, vendor-agnostic way to receive, process, and export traces, metrics, and logs. It suits teams building observability pipelines who want one agent instead of multiple vendor-specific collectors, with configurable processing and export to many backends.

OpenTelemetry Collector

open-telemetry/opentelemetry-go

Go's OpenTelemetry implementation now has stable logs too — The official Go API and SDK for OpenTelemetry now marks all three signals—traces, metrics, and logs—as stable, giving Go developers a complete, vendor-neutral observability toolkit for instrumenting applications and exporting telemetry to any compatible backend.

OpenTelemetry Go API and SDK

open-telemetry/opentelemetry-collector-contrib

The extended plugin ecosystem for OpenTelemetry Collector — This repository hosts community-built receivers, exporters, processors and connectors that extend the core OpenTelemetry Collector beyond its default components. It's the place to find vendor-specific integrations and experimental components, useful for teams needing broader telemetry pipeline support than the core distribution offers.

Contrib repository for the OpenTelemetry Collector

grafana/alloy

A Programmable OpenTelemetry Collector Distribution from Grafana — Alloy is Grafana's OpenTelemetry Collector distribution, adding an expression-based config syntax for building observability pipelines across metrics, logs, traces, and profiles. It bridges OTel, Prometheus, Loki, and Pyroscope ecosystems, supports Kubernetes-native resource handling without a separate operator, and clusters instances for automatic workload distribution.

OpenTelemetry Collector distribution with programmable pipelines

DataDog/dd-trace-go

Datadog's Go SDK bundles tracing, profiling and app security — This is Datadog's official Go client library, combining APM distributed tracing, continuous profiling, and application security monitoring in one package with out-of-the-box integrations for popular Go libraries. It suits teams already on Datadog who want visibility into bottlenecks and runtime attacks without stitching together separate tools.

Datadog Go Library including APM tracing, profiling, and security monitoring.

agentic-suite/agentsec-agentwatch

Agent security telemetry via OpenTelemetry GenAI traces — agentwatch records AI agent sessions through Claude Code hooks, normalizing events into validated, redacted records with a hash-chained store you can verify and replay. Now at v0.3.0 (a rename-only release), it previously passed 92/94 field-test cases, making it a concrete tool for diagnosing agent loops, tool overuse, or budget burn.

OTel GenAI telemetry and the open agent security-event schema