Steadicam Manufacturers

http://www.steadicam.com/ - Tiffen makers of Garrett Brown versions.
http://www.pro-gpi.com/ - PRO Stabilizing System.
http://www.mk-v.com/- MkV modular sled systems.
http://www.steadyrig.com Rig Engineering. New arm.
http://www.xcsinc.com/ - Ultimatte Sled and TB6 monitor.
http://www.artemis-hd.com/ - Sachtler version.
http://www.glidecam.com/ - For those without the big bucks.
http://www.actionproducts.ch/ - Swiss based manufacturer.
http://www.anthrazit-design.com/ - Rig and accessories
http://homebuiltstabilizers.com/ - build your own steadicam

Steadicam Accessories

Brackets, Mounts and other widgets
http://www.steadyrig.com - Arm rebuild, battery hanger
http://www.steadimoves.com/ - Jerry Hill's site. Lots of useful brackets and widgets.
http://www.lentequip.com/ - Lentequip. Low mode brackets and mounts.
http://www.whitehouseav.com/steadica.htm - new and used equipment.
http://www.lemac.com.au/  Lemac, Australian steadicam agent and service.
http://www.danielsauvedesigns.com/ - Back mounted vest.
http://www.walterklassen.com/index.htm - Back mounted vest
http://www.cameraessentials.com/ - wet weather / dust covers
http://www.marell.co.uk - Green screen monitor, video links, power converters.
http://www.lentequip.com/products/canatrans.html - Video transmitters, steadicam brackets.

Wireless lens control
http://www.prestoncinema.com/ - Preston wireless lens controls
http://www.bartechengineering.com/ - Bartech wireless lens control
http://www.scorpiohead.com/ScorpioFocusPage.html - Scorpio lens control
http://heden-engineering.com - Focus, Iris, Zoom motors

Steadicam Societies and forums

http://www.steadicam-ops.com/ - Steadicam Operators Association
http://new.steadicamforum.com/forums/ - Steadicam forum, chat, info, classifieds
http://www.steadicenter.com/ - Operator and equipment photos, courses and news
http://www.mlink.net/~pierrem/ - French operator's site
http://www.steadicamline.com/ - European steadicam site

Steadicam General

Garrett Brown
http://www.garrettcam.com/ - Garrett Browns site, more wizardry
http://www.geocities.com/Hollywood/Lot/7385/garrettbrown.htm - Garrett Brown
http://www.geocities.com/Hollywood/Lot/7385/garrettinterview.htm - Garrett Brown

Manuals
http://www.steadicam-ops.com/soamanual.shtml -Steadicam resource manual, dynamic balance primer, Ultra manuals can be downloaded from this page.

Books and articles
http://filmmakerstore.com/steadicm.htm#top - 'Steadicam With Style' by Ted Churchill
http://books.elsevier.com/uk - Book 'Steadicam Techniques and Aesthetics'
http://www.soc.org/opcam/07_fw9596/mg07_stcamfrc.html- Society of Operating Cameramen article on steadicam and back stress.
Steadicam on 'The Shining' - Italian site, excellent photos of Garret and Stanley Kubrick