CAROL - Cooperativa dos Agricultores da Região de Orlândia, Orlândia, São Paulo, Brazil
We use Debian GNU/Linux in our firewalls, routers, dns, mail (with Zimbra), file (Samba+winbind) and print servers (Cups). We use it in application servers, too. The Java applications run with Apache+Tomcat. All this serves 1,200+ users in the network.