Santa Cruz Laboratory for Visualization and Graphics
Conducts research in animal modeling and animation, environmental visualization, uncertainty visualization, virtual reality, nomadic collaborative visualization, tensor visualization, and flow visualization.
http://www.soe.ucsc.edu/research/slvg/

Visualization and Interactive Systems Group (VIS)
University of California Irvine. Conducts research in the areas of scientific visualization, virtual reality, image based modeling and rendering, volume visualization and biomedical imaging.
http://vis.eng.uci.edu/news/

Visualization and Imagery Solutions, Inc.
Consulting, training, and support for IBM's Visualization Data Explorer and the new OpenDX visualization software.
http://vizsolutions.com/

Instrumentation Innovation Ltd
Offers a range of services including advice on ultrasound systems and visualization of ultrasound . Photo and video clips of the visualization system and public-domain technical reports .
http://www.cambridge-en.com/

Computer Graphics Laboratory
Stanford University. Research areas include volume rendering, rendering algorithms and systems, 3D scanning, image-based rendering, virtual reality, compression of graphics objects, user interfaces for visualization, high-performance graphics architectures, and visualization of complex systems and environments.
http://www-graphics.stanford.edu/

XYZ Solutions
XYZ Solutions is a software company offering software libraries for 3D visualization, distributed data acquisition, and database connectivity tools, as well as applications and professional services. XYZ Solutions area of expertise includes engineering software, surveying software, 3D land modeling, 3D visualization, intelligent systems, SCADA (supervisory control and data acquisition), simulation, and virtual environments. Additionally, XYZ Solutions provides training, consulting, and professional services.
http://www.xyzsolutions.com/

Kitware Inc. Visualization Toolkit
VTK is an open source, freely available software system for 3D computer graphics, image processing, and visualization. Supports a wide variety of visualization algorithms including scalar, vector, tensor, texture, and volumetric methods
http://www.kitware.com/

Army Research Laboratory MSRC Scientific Visualization
Conducts research in the development of new techniques for exploiting high-performance computing technology, promotes the use of scientific visualization within the DoD, makes visualization technology available to DoD researchers, and prepares video presentations in support of DoD projects.
http://www.arl.hpc.mil/SciVis/

A Sketchbook on L-systems
Modeling and visualization of plants using parametric L systems.
http://coco.ccu.uniovi.es/malva/sketchbook/

Landrum and Brown Visualization
3D modeling, animation, multimedia and video production for architectural visualization.
http://www.landrum-brown.com/visualization/