the name is santafox. But its russian. U can see it original at http://www.santafox.ru And translated at http://google.ru/translate?u=santafox.ru&hl=ru&ie=UTF-8&sl=ru&tl=en
Never heard of it, looks okay from the site but as Collis said its in Russian, I think WP manages as a good CMS nowadays
Have never seen ti before, but it looks fine. Friendly support via forum looks friendly and willing to help. There’re a few designers which offer developing design for that CMS .