Cockpit is the modern Linux admin interface. We release regularly. Here are the release notes from version 176:

http://cockpit-project.org/blog/cockpit-176.html

Summary:
- Login: Suggest other browser when browser is unsupported
- PackageKit: Install auto-updates backend on demand

You can get Cockpit here:
http://cockpit-project.org/running.html

Cockpit 176 is available in Fedora 28:
https://bodhi.fedoraproject.org/updates/cockpit-176-1.fc28

Or download the tarball here:
https://github.com/cockpit-project/cockpit/releases/tag/176