Latest version is 2.3.0 "Lucca". Gruta Release Notes.
Gruta is a web content management system written in Perl. It currently powers this site, http://nutriguia.com and http://calendario-lunar.com , among others.
Current deployment is only provided as a git repository:
git clone http://git.triptico.com/gruta
You also need the Artemus and Grutatxt packages to make it work.