Mingle started out inside ThoughtWorks, with the basic roots going back to project management based on an elaborate spreadsheet. Neal goes into how Mingle was designed to be very flexible, so it can help to manage agile teams.
Neal explains that Mingle works on both MRI and JRuby. JRuby was considered because of the availability of some libraries, eg. for SVN access and others. Neal continues with more information about the experience of working with JRuby for Mingle, such as using Jetty to deploy it, building AntBuilder for writing JEE deployment descriptors and more. The talk finishes up with the performance evolution of Mingle and an outlook for the future.
Watch "Mingle: Building a Rails-Based product".