This page contains a list of links that are somehow interesting for Octave users.
http://sourceforge.net/projects/octave/: The SourceForge summary page for the Octave-Forge project.
http://www.octave.org: The GNU Octave web page.
http://wiki.octave.org: The GNU Octave wiki. This page contains a lot of information about the use and development of Octave.
http://octaviz.sourceforge.net: The Octaviz web page. Octaviz is a visualization system for Octave. It is a wrapper that makes all VTK classes accessible from within Octave using the same object-oriented syntax as in C++ or Python.
http://octplot.sourceforge.net: The Octplot web page. OctPlot is a handle graphics package for Octave. OctPlot provides quality postscript(TM) and screen graphics.
http://www.math.mcgill.ca/loisel/octave-workshop: The Octave Workshop web page. A GUI implementation for Octave that has the goal of being completely cross platform.
http://perso.orange.fr/prthomas/intro.html: Dal Segno al Coda - The octave dynamically linked function cookbook.