West Shore Chamber of Commerce
- Serves the west shore of the Susquehanna River in central Pennsylvania. Includes member directory, news and member services.
- http://www.wschamber.org/

Pennsylvania Recreation and Park Society
- Association of municipal and recreation and park managers, therapeutic recreation specialists,activity coordinators at health care and educational institutions, and related professionals.
- http://www.prps.org/

Pennsylvania Aggregates and Concrete Association
- Trade association representing quarry operators and other producers of construction materials. Educational materials, issues information, member directory, and other resources.
- http://www.pacaweb.org/

AIA Pennsylvania
- Documents and code books, government affairs, member benefits, special events and directory of accredited schools of architecture in the state.
- http://www.aiapa.org/

AIA Central Pennsylvania
- Mission statement, calendar, newsletter, events and information on sponsorship and advertising opportunities.
- http://www.aiacentralpa.org/

Central Pennsylvania Chapter of the Public Relations Society
- A professional organization serving all of Central Pennsylvania’s public relations practitioners.
- http://www.centralpaprsa.org

Pennsylvania Guild of Professional Chimney Sweeps
- Includes information on members, events, directors, education and memberships.
- http://www.paguild.org/

Pennsylvania Chapter of the National Association of Home Inspectors
- Members serving Eastern Pennsylvania. Membership, meeting schedules, and contact information.
- http://www.nahipa.org

Pennsylvania Society of Professional Engineers
- Organization devoted to the non-technical problems of all engineers regardless of employment or branch.
- http://www.pspe.org/

Pennsylvania Association of Licensed Investigators
- Membership, Code of Conduct, news, licensing information and contact details.
- http://www.pali.org/

Pennsylvania Society of Land Surveyors
- Statewide organization of individuals having an interest in the practice of surveying.
- http://www.psls.org/

Pennsylvania Antiques Appraisers' Association
- Non-profit organization providing professionals for reliable antique and fine art authentication and appraisals; includes member list, membership application, and related links.
- http://www.paappraisers.org

Pennsylvania Bar Association
- Professional association. Includes information for and about lawyers in the state, membership, members only area and contact details.
- http://www.pabar.org/

Industrial Modernization Center
- Independent, non-profit organization serving central Pennsylvania manufacturers in technology transfer and competitiveness. Includes information on services, map of counties served, calendar of events and newsletter.
- http://www.imcpa.com/

Pennsylvania Chamber of Business and Industry
- Provides Pennsylvania business information, advocacy, publications, and professional development opportunities.
- http://www.pachamber.org

SCORE - Pittsburgh Chapter
- Offers small business consultations, pre-business workshops, tips for running a successful business, and a web directory of helpful business related links.
- http://www.scorepittsburgh.com

The Pittsburgh Technology Council
- An Industry Association providing business related information and services, such as training, knowledge-sharing forums, and networking opportunities.
- http://www.pghtech.org

Pennsylvania Manufacturers Association
- Trade association representing manufacturing and business interests. Includes newsletter and membership information.
- http://www.pamanufacturers.org/

American Society of Landscape Architects - Pennsylvania and Delaware Chapter
- News, calendar of events, legislation and membership information.
- http://www.landscapearchitects.org/

Pennsylvania Collision Trade Guild
- Includes legislative updates and discussion forum.
- http://www.pctg.org/