GMetrics provides calculation and reporting of size and complexity metrics for Groovy source code.
This project has moved to GitHub:
https://github.com/dx42/gmetrics
The GroovyStAr ("Groovy Static Analyzer") project describes a new extensible SCA tool for Java and Groovy. The extensibility is reached through a customizable set of Groovy-scripts, each representing a static source code query against the created AST.