Code Quality Plugin (CQP) is an Eclipse plug-in, built on top of existing tools such as Checkstyle, Findbugs, JDepend to help realize code quality standards. CQP gives a snapshot of the quality of code during development.
CAP (code analysis plugin) is an eclipse plugin (written in Java) that analysis your java project. It checks dependencies between the classes and packages and gives you a hint about the architecture, reusability and maintainability. ("JDepend 2")