Write shiny(er) code. Test as you write to avoid churn.

Prefix is the world’s best dynamic code analysis tool. Prefix also happens to be the world’s only dynamic code analysis tool, but whatevs. Think of it like a lightweight web request profiler built to help developers never say things like “well, it worked on my machine,” ever again. Prefix’s dynamic code analysis reduces dreaded code churn by validating the behavior of your code with detailed code-level traces, logs by request, hidden exceptions, and SQL query monitoring.
See how your code performs in production and stay out of debt.
Use Retrace to gain better visibility into your code. Monitor CPU%, memory used, SQL query monitor, website check monitor, error rate monitor, among others. Retrace sends alerts and notifications to help developers identify underlying performance vulnerabilities and avoid the universally despised mountain of technical debt.


Integrated logs and errors make our traces the best in the game.
Stop sifting through log statements. Get all the details you wish your logs had with no code changes. Retrace automatically collects the details you need to quickly troubleshoot application errors. Get incredibly detailed transaction traces for your applications including log statements, errors, SQL queries executed, and external HTTP web service calls.
Hear It Straight From Our Customers

With Retrace, Carbonite identified a memory leak within 45 minutes of installation
Read the Case Study
“It’s all at my fingertips in one portal. Stackify solved the problem by having one centralized location to view log and error information regardless of which application it comes from, where it’s hosted or which environment it’s in.”
Our Products
We have two amazing products to help you continuously improve the performance of your applications.

Full Lifecycle Application Performance Management
Logging meets monitoring. Click for actionable insight.
- Made for testing and production
- For your servers
- Retrace users find production problems before production
- Integrated errors and logs
- The best traces in the game

Dynamic Code Analysis
Push the best code of your life, then do it again, and again.
- Made for developers
- For your workstation
- Prefix users experience less code churn
- Simulate many functional and nonfunctional tests as you write
- Runs on your second monitor
Retrace works out of the box with your .NET, PHP, Node.js, Ruby, Python and Java stack
