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

SigNoz is an open-source APM. It helps developers monitor their applications & troubleshoot problems, an open-source alternative to DataDog, NewRelic, etc. 🔥 🖥. 👉 Open source Application Performance Monitoring (APM) & Observability tool

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

GoFrame is a modular, powerful, high-performance and enterprise-class application development framework of Golang.

High-level tracing language for Linux eBPF

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

Application level tracing for Rust.

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

OpenTelemetry Go API and SDK

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

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

Java distributed tracing implementation compatible with Zipkin backend services.

Main repository for Datadog Agent

Open source APM: OpenTelemetry traces, metrics, and logs

Airline Booking is a sample web application that provides Flight Search, Flight Payment, Flight Booking and Loyalty points including end-to-end testing, GraphQL and CI/CD. This web application was the theme of Build on Serverless Season 2 on AWS Twitch running from April 24th until end of August in 2019.

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

Distributed tracing for spring cloud

Prometheus exporter for custom eBPF metrics