Apache
The technique of putting all configurations in "available" and create a symlink in "enable" when required is used here as well. Consequently the same type of functions are available. Because I haven't used Apache in many years these may not be very up-to-date.
fabsrv apache.restart
fabsrv apache.start
fabsrv apache.stop
fabsrv apache.editconf <name>
fabsrv apache.modconf <name(s)>
fabsrv apache.modconfb <name(s)>
fabsrv apache.modconfa <name(s)>
fabsrv apache.addconf <name(s)>
fabsrv apache.rmconf <name(s)>
fabsrv apache.diffconf [<name(s)>]
fabsrv apache.diffconfg [<name(s)>]