Porticus
http://porticus.alittledrop.com/index.html
"Porticus is a Cocoa GUI for the MacPorts package manager. MacPorts provides ready to build open-source software packages modified to compile and run on Mac OS X. The MacPorts project provides a TCL command line tool to manage installation, update and activation of the port packages. Porticus provides a GUI front-end to this tool."
VespeneGas DOT Com
http://vespenegas.com/rott.html
"This is a port of Rise of the Triad for the Nintendo DS"