In the fields of information technology and systems management, application performance management (APM) is the monitoring and management of performance and availability of software applications. APM strives to detect and diagnose complex application performance problems to maintain an expected level of service.
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。
Resilience4j is a fault tolerance library designed for Java8 and functional programming
📈 Capturing JVM- and application-level metrics. So you know what's going on.
An AI-powered next-generation open source real-time observability system.
An application observability facade for the most popular observability tools. Think SLF4J, but for observability.
Serve, optimize and scale PyTorch models in production
High performance Java APM. Powered by ASM. Try it. Test it. If you feel its better, use it.
JavaMelody : monitoring of JavaEE applications
Prometheus instrumentation library for JVM applications
Scouter is an open source APM (Application Performance Management) tool.
Xinfra Monitor monitors the availability of Kafka clusters by producing synthetic workloads using end-to-end pipelines to obtain derived vital statistics - E2E latency, service produce/consume availability, offsets commit availability & latency, message loss rate and more.
Fast scalable time series database
an open source solution to application performance monitoring for java server applications
Enterprise-Grade Open-Source Network Management Platform
The Java agent for Apache SkyWalking
OpenMessaging Runtime Interface for Java
A stats collection and distributed tracing framework
An agent component for the Java system