Agency ComPile
A directory of marketing communications agencies, offers a searchable database of the advertising, public relations, direct marketing, sales promotion and media buying agencies.
http://www.agencycompile.com/

Paintedcows.com
Advertising and marketing resource.
http://paintedcows.com/

AdFree
A business marketing directory offering links for advertising and education.
http://www.adfree.com/

Advertising Database
A searchable database American brands and their media planning agencies. Contains names, direct dials and current data within the year.
http://www.advertisingdatabase.com

Advertising Exposure
Search engine and directory of internet advertising resources that are free or low in cost.
http://www.advertising-exposure.com

AdPeople
Providing those interested in advertising, its science and everyday issues. Also find media people, creatives, marketers, directors and owners of ad agencies.
http://www.adpeople.net/

MarketingHub
Searchable database of marketing experts, organized by topics and categories of expertise.
http://www.marketinghub.com

American Agencies In America
Directory of selected advertising agencies in the United States and Canada, sorted by major cities. Site includes profiles, direct links to ad agencies and listings of industry job opportunities.
http://www.americanadagencies.com

Internet Advertising Guide.
Providing information and resources for Internet advertising and web traffic.
http://www.coolmediaplacement.com

Greenbook
Worldwide directory of marketing research and focus group companies and services. Detailed company information.
http://www.greenbook.org

Agencyfinder.com
Internet resource and no-fee professional consulting service for client and agency matchmaking.
http://www.agencyfinder.com/

Advertising Red Books
Information for thorough research on advertising agencies and advertisers worldwide. 100 years of history within the industry.
http://www.redbooks.com/

The Marketer's Portal
A directory of over 5,500 hand picked links to sites of use and interest to marketing and media professionals. It includes a communications timeline and 20 news feeds.
http://www.marketersportal.com/

American Directory of Creative Services
Provides a list of U.S. advertising and creative professionals and resources categorized by city and state. Includes links to media resources and organizations.
http://www.creative-info.us

SIC NAICS Codes
Provides complete databases of SIC and NAICS codes to assist in target marketing.
http://www.sic-naics-codes.com

WARC.com
Searchable database of over 25,000 articles, case studies and summaries from 30 global content sources. Includes daily industry news service, advertising data and statistics and best practice papers.
http://www.warc.com

Pittsburgh Creative Web Directory
A listing of advertising agencies, graphic design firms, and public relations agencies in the Pittsburgh area.
http://www.pittsburghcreative.com/

AdHub
Advertising agencies and marketing resources for Upstate New York USA.
http://www.adhub.com/

BtoB Online Directory
Business-to-Business advertising and marketing directory.
http://www.btobonlinedirectory.com/

Utah Advertising Agencies
Advertising agencies in Utah with direct links to listed agencies.
http://www.utahadvertisingagency.com

Electronic Commerce AS Ltd.
Global multilingual business directory and advertisement services and Classified Advertisements Services.
http://www.internetmarket.com/

Direct Response Marketing Guide
Directory of companies involved in the infomercial and direct response marketing industries.
http://www.responseguide.com

AdForum
Portal to the advertising, marketing and communications industry, with direct links agencies in many countries.
http://www.adforum.com/

Silicon Valley Creative Directory
Provides a list and links of Silicon Valley creative resources for all aspects of marketing.
http://www.svcreativedirectory.com

Raleigh Advertising Agencies
Directory of advertising agencies in the Raleigh, Durham, Cary area.
http://www.raleighadagencies.com

Hollis PR
Contact information for PR, marketing, advertising, sponsorship and corporate hospitality sectors.
http://www.hollis-pr.com/

Small-Budget-Advertising.com
Small budget advertising and marketing resources including online, Christian advertising, and ebooks.
http://small-budget-advertising.com/