ZBrush 4R3 for Win

PixologicZbrush Decimation Master
Free pluginWith Pixologic Zbrush Decimation Master - Free plugin you will be able to easily reduce the polygon count of your models in a very efficient way while keeping all their sculpted details. This solution is one of the fastest available and is able to optimize your high polycount models from ZBrush, allowing you to export them to your other 3D software packages. Pixologic ZBrush is required!.

Pixologic3D Print Exporter
Free pluginWith Pixologic 3D Print Exporter - Free plugin you will be able to export your favorite ZTool in STL and VRML file format, opening you to the world of the 3D Printing. Now it's possible for you to print your model: (1) Sculpt your art with Zbrush (2) Optimize if needed your model with the Decimation Master plugin (3) Export it with 3D Print Exporter. Pixologic ZBrush is required!.