Prefix Premium

• View logs statements by web req

• Basic javascript performance data

• View last 100 web requests

• Captures traces while open

• Supports web apps

Pro Version for Dev Box

Prefix is free.

Per User

Prefix Out of the Box Specs

Lightweight dev tool shows you real-time logs, errors, queries & more, right on your workstation!

For your Dev Box

All free features, plus:

• Trace transactions across servers

• Always running in background

• View last 1,000 web requests

• Save & share profile traces

• Profile custom methods

• Compare performance w/Retrace




• View performance and usage of:

        - SQL queries

        - Web service calls

        - Caching

        - Queuing

        - and much, much more

• Find hidden application errors


Get 1 free Retrace Dev/Test server per month when you upgrade!

• Advanced javascript perf. tracking

• Suggestions on code issues

• Supports self hosted web apps

• Supports Windows services

• Perform unit tests

You may have a profiler, but do you have a Prefix?

Prefix isn’t a standard code profiler. It displays details per web request so you can understand what your code is doing and how long it takes (i.e. “what did my code just do?”).

Detailed trace of

every web request

No messy config or

code changes

Detailed trace of

every web request

Runs fast and

is always ready

No messy config or

code changes

Runs fast and

is always ready

Prefix provides an instant feedback loop to see what your .NET or Java web app is doing. 

Find and fix bugs before they get to production = you're a god.

Immediate code insights.

Instant download. 

Thousands of developers in over a hundred countries are rocking Prefix. Are you?

/ month

Prefix comes in two power levels:

/ forever



Prefix Free

Prefix Premium


Why wouldn't you? It's amazing and it's free.


Prefix is the workstation component of Stackify's code lifecycle toolbox for developers.

Customize Prefix’s profiler to track any method from your code or third party library. Track down slow methods.

[ Prefix Premium Only ]

Trace transactions across servers

Smart suggestions

View what your code is doing on remote servers in real time! Requires Retrace on the servers.

Prefix will warn you if your code is running the same SQL query multiple times, not closing a SQL connection and more.

Instantly compare performance stats from QA & Prod to your local request. One click to compare all details in Retrace.

Track any method in your code

Compare performance





Learn more about supported frameworks for:


Prefix works out of the box with your stack







No one will ever know these devs make mistakes. That's genius squared!

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Optimizing APM solutions for low overhead makes it safe for them to run on production servers. Retrace is optimized in a major way.

Check out these helpful posts to learn more:

Learn how to set-up Retrace to track non web transactions with some minor code changes.

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Exceptions in .NET can be very expensive when it comes to CPU cycles. Read how Geeks with Blogs used Retrace to improve app performance.

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