http://usability.gnome.org GNOME Usability

http://developer.gnome.org/projects/gup/hig/1.0/ Gnome Human Interface Guidlines 1.0

http://usability.kde.org KDE Usability

http://usability.kde.org/activity/testing/firststeps/ KDE Usability First Steps

http://web.mit.edu/is/usability/aui/ Usability Testing of Athena User Interface

http://www.cs.waikato.ac.nz/~daven/docs/oss-wp.html Usability and Open Source Software

http://lists.kde.org/?l=kde-devel&m=103893727124382&w=2 kde-devel: $HOME == $DESKTOP Proposal

http://www.openusability.org/ Open Usability

http://www.asktog.com/basics/firstPrinciples.html First Principles of Design, per Bruce Tognazzini.

http://www.flossusability.org/ FLOSS Usability

http://www.betterdesktop.org Better Desktop

   1. Interpretation of user behavior, e. g., shortcut keys maintain their meanings.

   2. Invisible structures.

   3. Small visible structures.

   4. The overall "look" of a single application or service--splash screens, design elements.

   5. A suite of products.

   6. In-house consistency.

   7. Platform-consistency."

A very interesting article (GNOME): http://evolvedoo.sourceforge.net/abstract/index.html Abstracting the Linux Desktop from the File-system

Some tought about "The Perfect Desktop ?". A list of wishes and needs by endusers. http://frimouvy.udev.org/wiki/wakka.php?wiki=ThePerfectDesktop