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Codekvast - the Truly Dead Code Detector


Codekvast detects Truly Dead Code in Java-applications.

By Truly Dead Code we mean code that is in production, but has not been used by anyone for a certain period of time.

Codekvast works by attaching the Codekvast Collector to your application. The collector records the instant when methods belonging to any of your packages are invoked.

Modern IDEs like IntelliJ IDEA can detect dead code which have package private or private visibility. They can never know what potential callers there are to public and protected methods though.

This is where Codekvast can help. Codekvast records when your methods are invoked in production.

The collector periodically sends the recorded data as well as an inventory of all methods to the Codekvast Dashboard.

By using the web interface offered Codekvast Dashboard, you can find out whether a certain method, class or package is safe to remove or not.

Codekvast collects the data. You then combine that with your domain knowledge to make informed decisions about what is truly dead code that safely could be deleted.


Codekvast Collector is extremely efficient. It adds approximately 15 ns to each method invocation. If this is unacceptable, you can exclude certain time critical packages from collection.


Codekvast is released under the MIT license.

Pre-built binaries

Pre-built binaries, and the User Manual are available for download from

  • contains the Codekvast Agent as well as a sample codekvast.conf.

  • CodekvastUserManual.html is a complete User Manual. It contains installation and configuration guides.

  • contains release notes.

codekvast-agent-x.x.x.jar is also available as a Maven artifact at jcenter

Development Guide