3D Software tools

www.discreet.com for 3DS Max
www.digimation.com animation plugins for 3DS Max including metaballs and character animation.

www.softimage.com for Softimage.

www.aliaswavefront.com for Maya.
www.inkworks.com cartoon shader plugin for Maya.

www.newtek.com for Lightwave.

www.realsoft.fi for Realsoft 3D modeling and animation.

www.cinema4d.com/ for CINEMA 4D.

www.curiouslabs.com for poser character animation system.

www.corel.com for Bryce landscape modelling system.

www.rhino.com for NURBS modeling tool.

www.realviz.com for MatchMover - adding 3D to live-action footage, and ImageModeler - 3D models from photographs.

www.d-vw.com for D sculptor: 3D sculpting tool.

www.pixologic.com for Zbrush 3D sculpting.

www.electricimage.com for Amorphium 3D sculpting tool and Electricimage Modeling and animation tool.

www.maxon.de/ for bodypaint 3D painting software.

www.informatix.co.uk for Piranesi, a 2D/3D painting tool.