Install: jruby script/plugin install git://github.com/radlab/PIQL-on-Rails.git Update: jruby script/plugin install -f git://github.com/radlab/PIQL-on-Rails.git If you prefer to use SVN: svn checkout http://svn.github.com/radlab/PIQL-on-Rails.git See Wiki for more information including an example Rails project. The database is not persistent at the moment. It is reset every time you reset the server. See the wiki on writing a loader script to load data into the database on start. Please let us know what are the most important features/bugs to add/fix so that you can get work done.