Physik Instrumente (PI): Hexapods for scientific applications.
Newport: Similar hexapod products to PI.
Symetrie Hexapod: Wide range.
Micromech: Nanometre precision.
Mikrolar: Useful video.
FMB Oxford: Scientific products.
FGB Steinbach: Hexapod test rigs.
Elekta: Medical positioning systems.
ADS International: For large telescopes, with payloads from 300kg to 3500kg positioned to an accuracy of a few microns.
The AMiBA Hexapod Telescope Mount: Academic paper.