Quality is a tool that runs quality checks on your code using community tools, and makes sure your numbers don't get any worse over time. Just add 'rake quality' as part of your Continuous Integration

Maintains a directory of high water mark metrics for quality tools - used by https://github.com/apiology/quality and friends

Performs incremental quality reporting for the bigfiles gem. BigFiles is a simple tool to find the largest source files in your project; this gem plugs in with the 'pronto' gem, which does incremental reporting using a variety of quality tools.