Black and Noir Productions: Enigma

Company that offers to create custom gift adventures.
http://blacknoirproductions.com/

Barking Mad Productions

Commercial event organizer based in Virginia. Features information on upcoming events and reports on completed ones.
http://web.barkingmad.org/

Barking Spider Productions

Creators and producers of theater-style live action role-play games. Based in Ft. Myers, FL and staging events throughout Florida, using a variety of genres, time periods and settings.
http://www.angelfire.com/fl/BarkingSpider/

Interactivities Ink

Producers of Rules To Live By and other LARP systems. Also provide free live action roleplaying systems.
http://www.interactivitiesink.com

SYS Productions

New Jersey based theatrical game production company. Focus includes hosting live action events and publishing pen and paper games. Website offers community features such as in-character forums.
http://sysproductions.com/v7/

Mystic Realms

Offers monthly events in multiple game genres in the New Jersey, United States area.
http://www.mysticrealms.com

Mystery In Mind

Runs live action roleplaying and murder mystery events of various genres throughout the UK.
http://www.mysteryinmind.co.uk