specifically designed for multi-threaded software

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NEW! now fully integrated with GitHub

Try Coderrect with your Github repository

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Multi-threading is essential

Computing hardwares have been moving to multiple cores for quite some time. Today most phones in our pocket have 2~8 cores, a cluster in a HPC setting can have a few hundreds cores, and a typical GPU has thousands of cores and is capable of running tens of thousands threads simultaneously. To take advantage of these hardwares, most software programs already use multi-threading, especially those care about performance. Simply using the "Activity Monitor" or "Task Manager" on your personal computer to get a sense of how prevalent popular programs use multi-threading.

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Multi-threading is prone to errors

One big challenge in writing multi-threaded software is to ensure threads working with each other correctly, otherwise one can end up with unexplained crashes, poor performance, incorrect results and security vulnerabilities. This is because without correct synchronization multiple threads can update shared data at the same time and the order of their execution is unpredictable. Exponential possibilities of interlacing between multiple threads quickly go beyond what a human brain can handle.

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Multi-threading errors are difficult to detect and debug

Multi-threaded bugs are notoriously difficult to detect and debug because they depend on specific timings and sequences to manifest, and test cases are not reliable in covering these specific timings and sequences. To make things even worse, trying to debug can change the timing and sequence, and prevent these issues from occurring.

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Existing tools are INADEQUATE

A common practice to deal with multi-threaded bugs is stress testing, but because interlacing space is astronomical, stress tests usually can cover only a fraction of the space. Another group of tools commonly used is dynamic debugging tools, but detection can depend on the specific thread and input configurations, often practically infeasible. In addition, such method maybe able to show the existence of an issue, but usually can't pinpoint the cause.

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Large number of vulnerabilities continue to be discovered in production software, and are likely only the tip of the iceberg. Multithreaded bugs have caused significant damages in the past, and are expected to, unfortunately, continue to lead to losses and security breaches.

how Coderrect can help

We make sophisticated tools to provide peace of mind and ease of development

Automatically find multi-threaded issues, including security ones e.g. TOCTOU. Shift-Left your development of multi-threaded software, enable quick and low cost development iterations.

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A fast and accurate scanner for C/C++/Fortran multi-threaded bugs


A slow detector is of little practical use, so we built Coderrect Scanner to be super fast


Sophisticated and cutting edge algorithms find the most critical concurrency bugs


Designed for large and complex software, and scalable for very large code bases 

Easy to Use

Very easy to install and use, much like a "build" command

Detailed Report

Provides stack traces and other information to verify and correct the issues identified

Easy Integration

Easily integrated into CI pipelines including Jenkins, GitHub.
Check out newly added GitHub Action!