The following KB article,
Mac OS X Server: The Installer.app is referring to Mac OS X Server, which is different from the normal, "client" OS X installation.
I think the information in that article is from the original or very early release of Mac OS X Server, as it's using terms such as "File Viewer" and "Workspace Manager", which are taken directly from NeXTStep.
You might check on
http://www.versiontracker.com for an application that can uninstall applications based on the package receipt.
Hope this helps.....
Dual 2.7 GHz PowerPC G5 w/ 2.5 GB RAM Mac OS X (10.4.4)