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.

CNCF Jaeger, a Distributed Tracing Platform

An opinionated GoLang framework for accelerated microservice development. Built in support for databases and observability.

CAT 作为服务端项目基础组件，提供了 Java, C/C++, Node.js, Python, Go 等多语言客户端，已经在美团点评的基础架构中间件框架（MVC框架，RPC框架，数据库框架，缓存框架等，消息队列，配置系统等）深度集成，为美团点评各业务线提供系统丰富的性能指标、健康状况、实时告警等。

Zipkin is a distributed tracing system

APM, (Application Performance Management) tool for large-scale distributed systems.

A powerful framework for faster, easier, and more efficient project development.

High-level tracing language for Linux

highlight.io: The open source, full-stack monitoring platform. Error monitoring, session replay, logging, distributed tracing, and more.

📌 a missing Java std lib(simple & 0-dependency) for framework/middleware, provide an enhanced InheritableThreadLocal that transmits values between threads even using thread pooling components.

Coroot is an open-source observability and APM tool with AI-powered Root Cause Analysis. It combines metrics, logs, traces, continuous profiling, and SLO-based alerting with predefined dashboards and inspections.

Application level tracing for Rust.

OpenTelemetry Go API and SDK

magic-trace collects and displays high-resolution traces of what a process is doing

Production-safe dynamic tracing and diagnostics for Java applications—attach to live JVMs with no restart or recompilation.

Hubble - Network, Service & Security Observability for Kubernetes using eBPF

Open source APM: OpenTelemetry traces, metrics, and logs

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.

Packet, where are you? -- eBPF-based Linux kernel networking debugger

Main repository for Datadog Agent