Learn more about how CodeQL works, the languages and libraries supported by CodeQL analysis, and the tools you can use to run CodeQL on open source projects.

• :doc:`About CodeQL <about-codeql>`: CodeQL is the analysis engine used by developers to automate security checks, and by security researchers to perform variant analysis.
• :doc:`Supported languages and frameworks <supported-languages-and-frameworks>`: View the languages, libraries, and frameworks supported in the latest version of CodeQL.
• :doc:`CodeQL tools <codeql-tools>`: GitHub provides the CodeQL command-line interface and CodeQL for Visual Studio Code for performing CodeQL analysis on open source codebases.
• :doc:`CodeQL glossary <codeql-glossary>`: An overview of the technical terms and concepts in CodeQL.

.. toctree::
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   about-codeql
   supported-languages-and-frameworks
   codeql-tools
   codeql-glossary