I currently have an Ubuntu server with 10-15 users. I have some CLI experience, but I am not a fully CLI ninja. I currently have some groups made in the CLI to manage different groups of users.

In the near future we will probably expend ( how much more is not sure right now). Before things get out of hand I am currently looking for some sort of central managing system to manage the users and groups. I have looked at Puppet and it does a really good job at different things, but not so good at managing users at the servers (FYI, I have never used Puppet and this is just from researching the Internet. So even say that it is bad practice.).

So, what I would like is some sort of webgui to manage the users and groups. So I can click to what software can be used and what folders can be accessed and not.

I have looked at gnome-system-tools and is ok to use for making new users and to add them to groups. If somebody would like to add the programs than can be used with a certain group you still have to go to the CLI.

Question: Is there some sort of web GUI to manager users and groups from a linux server?

P.S. Just to be sure, I am not looking for something like LDAP or any other central login methods. I would just like to manage the users and groups and what they can do.