GnoRPM is a graphical front end to the RPM package management system. I was the initial author and maintained it up til the end of 1999 (around the 0.9 release). It shipped as the graphical package manager for Red Hat Linux from versions 6.0 to 7.3.
A screenshot of an earlier version can be found here.
Source code for GnoRPM can be found here:
Note that GnoRPM is targetted at the GNOME 1.x platform, and doesn’t support the latest versions of RPM. For GNOME 2.x systems, I started working on Nautilus RPM as a replacement, but its feature set is much more limited.