Infomaki: Open Source Usability Testing Software

Infomaki is a Ruby on Rails application developed by the New York Public Library as a way of rapidly testing alternate designs and navigation language with minimal disruption to users. NYPL are using it to power http://usability.nypl.org and test new designs for the main NYPL.org web site. More and documentation is available at the NYPL Labs blog, http://labs.nypl.org.