Empire Directory is the developer of multiuser text-based MMOs
Version of ImpFE packaged as a .deb file for use on a Ubuntu/Debian Linux distros.
This is the smart client ImpFE for Linux (built on and for Ubuntu, may work on other distros) Version 0.2.1
My favorite Empire client, WinACE. Runs on most platforms using Wine. Tested on OSX & Ubuntu as well as Windows.
Great client for Empire programmed in Python/Tk and runs on almost every platform.
This is the source to the game Imperium, version 20150912. This has only been tested on Ubuntu, but other distros should work also.