The Advanced Transport Group (ATG)
- Researching and designing ULTra, a small vehicle, top mount monorail guideway, urban transport system for the future. University of Bristol, UK.
- http://www.aer.bris.ac.uk/atg/

Citizens for Personal Rapid Transit
- A grassroots organization promoting Personal Rapid Transit
- http://www.cprt.org

ACPRT
- promoting the design, installation, and operation of a Personal Rapid Transit system in the city of Austin, Texas.
- http://www.acprt.org

SkyWeb Express Personal Rapid Transit
- Transit system of small, computer controlled vehicles traveling on-demand nonstop between stations on a network of slim guideways. Part of Taxi 2000 Corp.
- http://www.skywebexpress.com/

Taxi 2000 Corp.
- Proposed, prototyped system. Personal Rapid Transit article by Dr. J. Edward Anderson states design philosophy, economics, operation, optimization, potential. Descriptions, diagrams, photographs, videos, news, FAQs, links.
- http://www.taxi2000.com/

SkyTran
- Personal rapid transit that may go 100 mph and should cost less than roads or traditional fixed guideway rail systems.
- http://www.skytran.net/

Advanced Transport Systems, Ltd.
- Spinoff from Advanced Transport Group, University of Bristol, UK. Researching, designing ULTra monorail PRT system. Descriptions, background, facts, downloads, images, news, environment information, contacts.
- http://www.atsltd.co.uk/