Nautilus RPM
Nautilus RPM was a set of extensions for the Nautilus file manager to help manage packages on an RPM based system.
I started working on it as a replacement for GnoRPM on GNOME 2.x systems, but never completed it.
Nautilus-RPM can be downloaded from ftp.gnome.org and its mirrors:
https://download.gnome.org/sources/nautilus-rpm/