Following is a list of services that can (for most applications) be turned off if you are setting up a bare-bones CentOS 6.4 server:
Automatic bug reporting services:
abrt-ccpp
abrt-oops
abrtd
Power control and features, query battery and config status
acpid
Controls ‘at’ command queing, examining, or deleting jobs for later execution. Anything atd can do, cron can do
atd
File auditing
auditd
Auto fs mounting
autofs
Printing
cups
For desktop environments:
netfs
Network filesystems:
nfslock
rpcbind
rpcgssd
rpcidmapd
MTA
postfix
ip6tables
Sends anonymized usage stats:
udev-post