Public relations companies

Omnicom is a provider of advertising, marketing, and corporate communications services.

The Interpublic Group of Companies (Interpublic Group, IPG) is a global provider of advertising and marketing services.

Cision USA is a company that provides software and services to public relations and marketing communications professionals.

WPP is a communications service group that provides marketing and communications solutions.

Publicis Groupe is a company that engages in marketing, communication, and digital business transformation.

American Tower Corporation (ATC) is a company operating as a real estate investment trust and an owner and operator of wireless and broadcast communications infrastructure solutions.

Townsquare Media is an entertainment and digital marketing services company, operating digital, radio and live event properties in the U.S.

Hakuhodo DY Holdings is a marketing services company.

Middlesex Water is a water utility company, which owns and operates regulated water utility and wastewater systems in New Jersey, Delaware and Pennsylvania.

Dentsu is a multinational media and digital marketing communications company.

Onvia is the leading provider of sales intelligence and acceleration technologies for the business-to-government (B2G) marketplace.

FreakOut Holdings (株式会社フリークアウト・ホールディングス) is a company that offers marketing platforms.