Omiquji is a GUI editor for omikuji files. It is written using the Qt toolkit. It has a Q in its name to distinguish it from the command line omikuji program more so than to indicate the Qt heritage.
I threw it together in just a couple of days, so it still has some rough edges and no real documentation.
To build and install it, simply run qmake -recursive in the top level project directory and then run make. You can copy the resulting executable, omiquji, to wherever you like.
The omiquji source code is currently available on github.
omiquji is distributed under the terms of the GNU General Public License version 3, or later.