International Clifford Algebra Society - Includes an abstracts mailing list, information on events and back copies of the journal "Advances in Applied Clifford Algebras". Geometric Algebra and its Applications in Mathematical Physics - C.J.L. Doran's thesis on applications of Clifford algebras. Downloadable in PostScript format. Clifford - A Maple package for computations in Clifford algebras of an arbitrary bilinear form. Includes documentations of new features and installation information, as well as downloads of the software. Maths for (Games) Programmers: Multivector Methods - An introduction on this formalism and its applications in space-time. ICCA7 - 7th International conference on Clifford Analysis and their applications in Mathematical Physics. Université Paul Sabatier, Toulouse, France; 19--29 May 2005. The CLU Project - Aims to produce tools for use with Clifford algebra. Includes information on the visualisation libraries and calculators produced, as well as downloads. GA-Net - Free electronic newsletter on Clifford algebra and geometric algebra. Archive, free subscription functions and submission information. Geometric Calculus Research and Development - Includes a brief introduction, articles and book chapters on the subject, as well as references to further information. EVAlgebra - Symbolic calculator software for Clifford Algebras, based on the Eigenmath script language. Site includes software download, documentation, and tutorials.