Mutations is a project mainly written in Java, it's free.
A Java-based application that extracts and analyses various metrics from the version history of Java-based software systems in order to establish the evolution characteristics of the system.
Set MUTATIONS_HOME environment variable to deployment folder:
export MUTATIONS_HOME=/Users/apj/development/mutations
Set MUTATIONS_CONFIG environment variable to properties file:
export MUTATIONS_HOME=/Users/apj/development/mutations/Mutations.properties
Specify the root directory for systems in the .properties file:
buildsDirectory=/Users/api/data/systems/