fontconfig-font-replacements provides free substitutions for popular proprietary fonts from Microsoft and Apple operating systems.

It makes your web browsing more aesthetically pleasing - you won't be seeing DejaVu Sans font on every damn webpage.

Default for Fedora are slight hinting and grayscale antialiasing.
Some people find subpixel antialiasing to look better - others can't stand color fringing caused by it. If you want to try it for yourself install fontconfig-enhanced-defaults package. You can also enable it manually in Gnome Tweaks or by running following command in terminal:

dconf write /org/gnome/settings-daemon/plugins/xsettings/antialiasing "'rgba'"

to change back to grayscale (default) antialiasing:

dconf write /org/gnome/settings-daemon/plugins/xsettings/antialiasing "'grayscale'"

COPR repository: https://copr.fedorainfracloud.org/coprs/dawid/better_fonts/

1. Enable COPR repository:
   sudo dnf copr enable dawid/better_fonts -y
2. Install packages:
   sudo dnf install fontconfig-font-replacements -y
3. (Optional) Enable subpixel (rgb) antialiasing:
   sudo dnf install fontconfig-enhanced-defaults -y
4. Log out and log in again or restart computer to see the effect

(probably outdated)

Check build_instructions