GUIGNA: the GUI of Guigna is Not by Apple :)
Guigna* is the prototype of a GUI supporting Homebrew, MacPorts, Fink and pkgsrc at the same time. This branch was originally a fork, but upstream moved their branch to https://github.com/gui-dos/Guigna, so now this technically isn't a fork any more...
Guigna was born as a single MacRuby script for personal use: it tries to abstract several package managers by creating generalized classes (GSystem and GPackage) while keeping a minimalist approach and using screen scraping.
Guigna doesn't hide the complexity of compiling open source software: it launches
the shell commands in a Terminal window you can monitor and interrupt. When
administration privilege is required, the password for sudo can be typed
directly in the Terminal brougth to the foreground thanks to the Scripting Bridge.
When several package managers are detected, their sandboxes are hidden by appending
_off to their prefix before the compilation phase. An off-line mode, however, allows
to still get the details about the packages by scraping directly their original
websites.
* The Kodkod (Leopardus guigna), also called Guiña, is the smallest cat in the Americas.