PMD software version 6.23.0 is a source code analyzer that helps developers detect and fix issues in their code. It offers over 20 different types of code analysis, including potential bugs, code style violations, and performance issues. The software also integrates with popular development tools such as Eclipse, Jenkins, and SonarQube, making it easy to incorporate into existing workflows. Additionally, PMD supports multiple programming languages, including Java, JavaScript, and XML.