Prefix the Bugs in Your Code

Understand what your code is doing and find bugs you didn’t even know existed.

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Prefix is used by over 20,000 developers in more than 140 countries!

Prefix Trace Return Features Highlighted

Find a bug, you're a hero!

Use Prefix every day while you are writing and testing your code.

  • Validate the behavior of your code
  • Find hidden exceptions in your code
  • Identify slow SQL queries and N+1 problems
  • Review the performance of your code

Can I use Prefix?

Prefix is designed for daily use by developers who are developing .NET or Java web applications.

  • .NET or Java
  • Web Applications
  • Windows desktop
  • Servers
  • GUI applications
  • macOS

Note: Prefix currently only works on Windows. We plan to support macOS in the future.

you found the bug!

Download Prefix Now for Free!

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Prefix supports .NET & Java applications running on Windows.

 

Tour Prefix in 90 Seconds

 

Feature Highlights

View Your Logs by Request

Stop sorting through messy log files. See the exact log messages for a single web request.

Find Hidden Exceptions

Prefix can instantly show you all the exceptions hidden in your code.

Quickly Spot Suspicious Behaviors

People see things with Prefix they never expected. Why does that web request do 38 database calls?

View SQL Queries

Including SQL parameters, affected records and how long it took to download the result set.

Prefix vs. Standard code profiler

Prefix web request profiler

Captures detailed code-level traces of each web request.

Prefix Code Profiler Trace Return

Prefix is designed to be used every day.

Standard code profiler

Provides method and line level performance reporting.

Standard Code Profiler

Typically used only when CPU usage is high.

Prefix is perfect to run on your second monitor!

Want to see see Prefix in action?

Visit Prefix Sandbox
Prefix is perfect for a second monitor

Prefix vs Retrace

Not sure what the differences are between Prefix and Retrace? No problem!

Prefix

For your workstation

Lightweight web request profiler

  • Used during development
  • View details of individual web requests
  • Code improvement suggestions
  • Save and load old traces
  • View traces on remote servers that have Retrace installed
  • Compare production to servers in production
Retrace Logo

For your servers

Developer friendly APM

  • Used in QA and production environments
  • Centralized logging & error tracking
  • Comprehensive application monitoring
  • Application & server metrics
Learn about Retrace

Ultimately, you need both!
Prefix while writing your code, and Retrace in QA and production.

Read more about Prefix