APM strives to detect and diagnose complex application performance problems to maintain an expected level of service. APM is “the translation of IT metrics into business meaning ([i.e.] value).”
Developer-first error tracking and performance monitoring
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
APM, Application Performance Monitoring System
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。
OpenObserve is an open-source observability platform for logs, metrics, traces, and frontend monitoring. A cost-effective alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.
APM, (Application Performance Management) tool for large-scale distributed systems.
Resolve production issues, fast. An open source observability platform unifying session replays, logs, metrics, traces and errors powered by ClickHouse and OpenTelemetry.
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.
A transparent ui-block detection library for Android. (known as BlockCanary)
【免费社区版】【企业版】Webfunny是一款集全链路监控和埋点系统于一体的大数据分析系统，我们致力于解决线上的疑难杂症和精细化分析业务数据；监控系统面向技术、埋点系统面向业务，两者配合使用，相得益彰。
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.
eBPF Observability - Distributed Tracing and Profiling
High performance Java APM. Powered by ASM. Try it. Test it. If you feel its better, use it.
A Manageable, Measurable and Traceable Node.js Application Manager represented by Alibaba powered by TypeScript
JavaMelody : monitoring of JavaEE applications
An enterprise-grade Cloud-Native application platform for Kubernetes.
Powerful, comprehensive (Android) application performance management platform. 360线上移动性能检测平台