3d Photorealistic Rendering
Provides resources for Softimage XSI and 3D users, including videos, classes, tutorials, utilities, plugins, scripts, shaders, and models.

Highend3d.com
A high end 3D resource and community web site for Alias PowerAnimator, Maya, Softimage, Sumatra, and Renderman users.

Softimage Surface Continuity Manager Tutorials
Five tutorials by Jeremy Birn that cover a multi-patch approach to NURBS modeling, which allows NURBS to be assembled into a seamless "quilt" of multiple NURBS surfaces, which together define a complex organic form.

Softimage User's Site and Mailing-List Archive
Providing resources for Softimage users, including learning resources, tutorials, a knowledge base index and the mailing-list archive, the Archive archives all 9 of the SI-related mailing lists in a web browsable and searchable format.