*** There is now an active effort to include a QT-only (no KDE) based IDE for Octave that is part of the main Octave source code. I recommend that you build and test that version of an IDE, as it will be the most supported option going forward. ***
The octavede is a development environment for the Octave mathematical software package. Octave normally is run in a terminal. Octavede provides an GTK/X11 application that provides functionality similar to other mathematical software packages.
Looks like plenty are having success on Linux though - not much luck for me on the Mac! On Mac OS X 10.7.5, installed many dependencies via MacPorts (10 to be precise, 2 of which took a day to figure out some building issue) to finally get `./configure` to run successfully. Finally I got to `make` after a few days, only to fail on a source code error! OctaveUI.cpp:487: error: ‘class Gtk::FontSelectionDialog’ has no member named ‘get_font_selection’ giving up! Moved instead to qtoctave (available on MacPorts via `port install qtoctave-mac`), which works brilliantly.