JRebel, XRebel by Perforce

We are dedicated to changing the way the world develops, tests and runs Java applications. Our Java Productivity Toolkit is helping teams iterate faster, improve performance, and increase customer satisfaction.

JRebel empowers users to instantly reload changes to Java classes, resources, and 80+ frameworks’ configuration, and compiles quickly with the IDE, instead of slow Maven builds.

XRebel, an always-on, interactive profiler that runs with your web app and displays alerts in your browser when it discovers issues, is bringing real-time application performance to companies all over the world.