The work contained herein constitutes a report of the "Beyond the Standard
Model'' working group for the Workshop "Physics at TeV Colliders", Les Houches,
France, 2-20 May, 2005. We present reviews of current topics as well as
original research carried out for the workshop. Supersymmetric and
non-supersymmetric models are studied, as well as computational tools designed
in order to facilitate their phenomenology.Comment: 269 pages, 165 figures. Web page of the workshop (with links to the
talks): http://lappweb.in2p3.fr/conferences/LesHouches/Houches2005