Real Time Insight, Faster Apps.

Real time performance insights to help developers find and fix performance issues 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.

Key features

Application profiling

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

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.

Get Started.
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1 Download
Get your XRebel Trial. It’s free. No credit card information needed.
Try it free
2 Set up
Extract the archive. Add the xrebel.jar to your server startup (using -javaagent).
2 Run
Launch your web application. Find the XRebel toolbar in the bottom left corner of the browser.