From Fedora Project Wiki
system-config-users
What is system-config-users?
The system-config-users tool lets you manage the user and group accounts on your computer.
Download
Grab the latest source from the git repository
You can get the current source directly from the git repository:
git://git.fedorahosted.org/system-config-users.git http://git.fedorahosted.org/git/system-config-users.git
Released versions
Download released versions from fedorahosted.org.