Eovia
Makes Carrara (successor to Ray Dream and Infini-D) and Amapi (NURBS) 3D modelers. Show special was $279 each.

Pandromeda
MojoWorld 1.0 is like Bryce, but creates an entire terrain planet instead of infinite flat plane

Arete Entertainment
Water, cloud, and fire plug-ins for After Effects and 3D packages, starting at around $500.

Bionatics
makes natFX (formerly AMAP) plant modeler plug-in for Maya

Realviz
ImageModeler creates 3D models from photos, Stitcher makes QTVRs from photos, ReTimer allows you to speed up or slow down footage.