We highly recommend www.swaay.org website for a more comprehensive index of sex worker organisations, as well as much needed information and resources for sex workers and allies!

Other Organisations:

-Online
http://www.escortbuddys.com/
http://www.saafe.info/
http://www.hookonline.org/

-UK

http://www.xtalkproject.net/  (Free english classes for migrant sex workers)
http://www.prostitutescollective.net/ 
http://www.scot-pep.org.uk/

-Europe
Sweden http://www.rosealliance.se/
Denmark http://www.s-i-o.dk/ 
France http://site.strass-syndicat.org/ (French Union of Sex workers)
Serbia http://www.eng.queerbeograd.org/ (Queer anti-fascist pro-sex worker organisation)
Germany http://www.sexworker.at/