How many programs are protected by SELinux?

As of RHEL 6.2, there are 606 unique domains protected across 245 modules.

# yum install setools-console
...
# seinfo -adomain -x | tail -n +2 | wc -l
606
# ls -1 /etc/selinux/targeted/modules/active/modules | wc -l
245

[via Dan Walsh.]