Added Exakat

Author: Famille Seguy

README.md

@@ -31,6 +31,7 @@ Supported by: [GuardRails.io](https://www.guardrails.io)
 
 ## Static Code Analysis
 
+- [Exakat](https://github.com/exakat/exakat) - *Exakat* is a PHP static code analysis, with serious [Security reviews](https://exakat.readthedocs.io/en/latest/Rulesets.html#security).
 - [phpcs-security-audit](https://github.com/FloeDesignTechnologies/phpcs-security-audit) - phpcs-security-audit is a set of PHP_CodeSniffer rules that finds vulnerabilities and weaknesses related to security in PHP code.
   - `docker pull guardrails/phpcs-security-audit`
 - [progpilot](https://github.com/designsecurity/progpilot) - A static analyzer for security purposes.