The Borges homepage and Borges CVS and Borges releases are now hosted on RubyForge.
At RubyConf 2003 in Austin I gave a presentation on Borges 1.0. I have a PDF of the presentation.
These are only old downloads, saved here for posterity. Please go to the Borges RubyForge filelist for up-to-date versions of Borges.