Harness the power of APM directly from your dev box.
Prefix is a lightweight easy-to-install code profiler used by developers every day. Prefix can help you optimize bottlenecks and improve the user experience before you push your code.
Prefix is not currently available for mobile or tablet devices
Introducing the developer’s sidekick. We call it Prefix.
Never have a nightmare code review ever again. Prefix saves the day by profiling and testing your code as you write it.
The NEW Prefix Premium is now available! Try it for free today!
Works with your stack
Prefix is designed for daily use by developers using these languages on macOS, Windows and Linux.
Tens of thousands of developers use Prefix every day
Senior developers love Prefix
When senior devs need a tool to guarantee optimal application performance they turn to Prefix. Prefix’s profiling and tracing help even the most experienced developers find slow SQL queries, hidden exceptions, and more.
The power of APM for developers
Prefix puts the power of APM in the hands of developers. By validating the performance of code as it is written, Prefix users push better code to testing, receive fewer support tickets from production, and have happier dev managers.
Here’s what Prefix users are saying
View SQL Queries
Discover underperforming SQL queries, ORM generated queries, and previously unknown bottlenecks. Track every SQL call parameter, affected record, and download times. Prefix also makes it easy to spot dreaded N+1 patterns.
Your new favorite log viewer
Stop sorting through messy log files. Bring all of your logs together to effortlessly locate issues. Explore the context of suspicious logs directly within the request, and jump directly from a log into a trace for effortless debugging.
- Structured logging
- View logs by request
Trace and profile together
Stackify’s powerful code profiling and tracing is the heart of Prefix. Our traces increase visibility into poor-performing dependencies. This is especially useful when working with legacy code, framework sections, and finding hidden exceptions.
- Web services
- Cache services
- 3rd party services
- Plus dozens of other dependencies