COMPANY: Undersky.ru

These guys do web development, and use Rivet.

http://www.undersky.ru (russian) http://english.undersky.ru (english version)

http://www.ageofweb.ru/dir/index.cgi?action=show_press&id=893 (in russian)

Also we provide a free rivet-based CMS http://www.undersite.ru