Hi Neil,

EDIT: This doesn't seem like it's part of gnome-shell. Originally I thought what you are seeking would be found in an gnome-shell-extension.

I think what you are looking for is systemadm (which is part of systemd-ui in Fedora 20). I do not see anything (yet) in RHEL 7 that provides the same functionality.

It appears that in 6.x the applet was part of system-config-services (and like I mentioned I do not see a comparable package in RHEL 7).

[root@devstack ~]# ps -ef | grep services
jradtke  29792     1  1 22:27 ?        00:00:02 /usr/bin/python /usr/bin/system-config-services
root     29794     1  1 22:27 ?        00:00:02 /usr/bin/python /usr/share/system-config-services/system-config-services-mechanism.py
[root@devstack ~]# yum whatprovides /usr/bin/system-config-services
Loaded plugins: priorities, product-id, refresh-packagekit, rhnplugin, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
This system is receiving updates from RHN Classic or RHN Satellite.
784 packages excluded due to repository priority protections
system-config-services-0.99.45-1.el6.3.noarch : Utility to start and stop system services
Repo        : rhel-x86_64-server-6
Matched from:
Filename    : /usr/bin/system-config-services

I think the significant difference though is 6.5 still uses chkconfig and service and 7 uses systemctl.