Follow the Progress of JRuby on Rails
Charles Nutter has been keeping an updated page of Rails test run results that shows progress towards the goal of a fully-functioning JRuby on Rails. Members of the JRuby team have already demonstrated Rails applications working on JRuby, and even ActiveRecord talking to databases via JDBC. To be clear, what we’re talking about here is the effort to get the sizable Rails test suite running at 100% passing.