Fedy for Fedora
 

Anyone know if a Fedy application has been released for Fedora27 ?

The one I am familiar with may be the fedy you are looking for. "Fedmsg Notifications".
If you are looking for a list of repositories for extra software, your on your own.

However, if you want a Fedora with the extra repositories that RedHat does not allow, try university of montana,
or

This Fedora Spin
It includes rpmfusion, cisco, programming editors, and more (internet chat, etc).

Its a network installation version, so you can choose your desktop of preference (gnome, kde, mate,...)