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).”
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。
APM, (Application Performance Management) tool for large-scale distributed systems.
📌 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.
A transparent ui-block detection library for Android. (known as BlockCanary)
High performance Java APM. Powered by ASM. Try it. Test it. If you feel its better, use it.
JavaMelody : monitoring of JavaEE applications
Powerful, comprehensive (Android) application performance management platform. 360线上移动性能检测平台
An app performance monitor(APM) , like "Android Studio profiler", you can easily monitor the performance of your app real time in browser
Scouter is an open source APM (Application Performance Management) tool.
an open source solution to application performance monitoring for java server applications
The Java agent for Apache SkyWalking
对java、scala等运行于jvm的程序进行实时日志采集、索引和可视化，对系统进行进程级别的监控，对系统内部的操作进行策略性的报警、对分布式的rpc调用进行trace跟踪以便于进行性能分析
UAVStack Open Source All in One Repository
Datadog APM client for Java
An agent component for the Java system
(UNMAINTAINED) inspectIT is the leading Open Source APM (Application Performance Management) tool for analyzing your Java (EE) applications.
JavaAgent-based Microservice Governance Platform