Trade Associations - Productions Services Association - The Association of British Theatre Technicians is a charity and a company limited by the guarantee of its members - Non-profit trade association representing the North American entertainment technology industry. - PLASA is the lead international membership body for those who supply technologies and services to the event, entertainment and installation industries. - Registry of set, costume, and lighting designers, including agent information and selected images of past design work. - The Lifting Equipment Engineers Association (LEEA) is established across the globe as the leading representative body for all those involved in the lifting industry worldwide.

Useful Websites - This web page lists the nominal voltages and frequencies, power plugs, and languages used in residences and commercial sites in some 200 countries worldwide.

Health and Safety Consultants - Advice and training services for the live music, entertainment and event production industries.

Discussion Forums - Theatre forums with large archive of technical questions. Many different categories, stagecraft, technical, props.

Production Industry News Websites - Entertainment technology news on the web. - The online home of Lighting & Sound International - the entertainment technology monthly.

Reccomended Businesses - Used Truss carry a large selection of new and used truss along with associated rigging gear.