Worldwide Writers Copyright Association - Offers copyright protection for screenplays, books and other literary works. Offers a script marketplace, legal contracts, and tools for the film industry.
Writers Guild of America, East - Eastern branch of the labor union, promoting and protecting the professional and artistic interests of writers in the motion picture, television, radio and communications industries.
Writers Guild of America, West - Official union site representing writers in the motion picture, broadcast, cable and new media industries. Find resources covering craft, markets, and representation.