SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. 🔥 🖥. 👉 Open source Application Performance Monitoring (APM) & Observability tool

CNCF Jaeger, a Distributed Tracing Platform

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.

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

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

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

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.

Open source APM: OpenTelemetry traces, metrics, and logs

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

Main repository for Datadog Agent

Function graph tracer for C/C++/Rust/Python