GtkACE is a graphical client for Wolfpack Empire, the multi-player war and economy game played over the network. It is a GTK port of WinACE, the Windows client for Empire.

It keeps a local database of your country from the server, and draws a hex map of your sectors, units and everything you have seen of other countries. It has dialogs for moving, navigating, building, loading, attacking, firing and flying; telegrams; colour schemes; a reports window; and WinACE's tools: production summary, build projection, famine relief, fortify, range table, and che and plague markers.