Real Time Insight, Faster Apps

Real time performance insights to help developers find and fix common performance pitfalls early on, in day-to-day development. Master your business applications to reduce rework, minimize technical debt, and improve end-user experience.

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Performance metrics at your fingertips

The in-browser widget is injected into your front-end out-of-the-box. It gives you quick access to digestible data so you can hit the ground running even if you’re not a performance expert.

Made for the developer, not the data nerd

Only see the data you need, when you need it. Moment-by-moment reports help you find and eliminate performance issues in development – before anyone else finds out about them.

Built for everybody

Useful for experts and junior developers alike.

Bottom-up views

Method-level drilldowns for pinpointing performance issues.

Rapid feedback

Continuous performance tuning for better code quality.


Follow requests through different threads, applications and JVMs.

Not just another profiler

It’s a developer tool, for development.

Performance issues are more complex and time consuming to diagnose and fix the later they are found – when there are more moving parts to consider. Fixing issues in late stages of the development life cycle can cost 30x more than in development.

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Introducing the Standalone UI

Making Web Services development a first class experience.

The Standalone UI gives you ultimate visibility into your headless apps. Request details, IO activity, logs, exceptions and more are available right in the browser.

Learn more

Key features

Application profiling

Track the time spent on each request. Find slow methods and make them run faster.

Messages and jobs

Monitor messages and background jobs. Fix resource hogs.

Database and NoSQL

Get insight into database activity. Spot methods that query too much.


Discover hidden exceptions. Follow the stack trace and fix the problems.

Web services and RMI

Get a detailed overview of invocations executed. Detect slow calls.


Find relevant info without digging. View only the logs emitted during requests.

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Set up

Extract the archive. Add the xrebel.jar to your server startup (using -javaagent).


Launch your web application. Find the XRebel toolbar in the bottom left corner of the browser.