Harrisburg Regional Chamber & Capital Region Economic Development Corp. http://www.harrisburgregionalchamber.org/default.asp

The Harrisburg Regional Chamber and CREDC serves as a catalyst for promoting growth and quality of life in the region by providing a unique blend of business, community and economic development, and advocacy services under one roof to boost our economic vitality and livability as a region. 

Innovation Transfer Network (ITN)
http://www.innovationtransfernetwork.org/

The purpose of the ITN is to “connect the dots” between private sector companies and the innovation taking place at colleges and universities across the region. By providing outreach, educational services, and networking opportunities, ITN works to increase the rate of technology transfer and commercialization of new products and services.  
A dynamic organization, partnering with the region’s higher educational institutions, private sector companies, economic development, and government, the ITN is designed to promote collaboration, commercialization and the creation of high-tech jobs. The ITN provides companies with a gateway to connect with the region’s colleges and universities to aid in addressing needs such as: new product development, in-depth research, interns as potential employees, as well as product testing and validation.

TechQuest
http://www.techquestpa.com/

TechQuest-Internship was developed by leaders from companies, schools and student organizations to make PAID Internships easier, standardized and streamlined so more organizations could easily offer PAID Internships to more students. The Technology Council of Central Pennsylvania hosted these efforts and financially supports the operations of the TQ Internship system. Their number one goal is helping more companies offer more PAID Internships. The TQ Internship Advisory Board developed and deployed the leading-edge Internship system that is a 24/7 web-based tool that coordinates and inner-connects the entire internship process to save companies, schools and students, time, resources and frustration.

Workforce & Economic Development Network (WEDnetPA)
http://www.wednetpa.com/

WEDnetPA gives you access to forms and templates, links to other helpful training sites and everything else you need to organize, plan and assess your training and use workforce development to increase the productivity of your operation.
Through the Guaranteed Free Training Program, qualified in-state businesses and out-of-state companies relocating to the economic-friendly business climate of Pennsylvania can access funding for a wide range of training.

Team Pennsylvania Foundation
http://www.teampa.com/foundation/

The Team Pennsylvania Foundation is a public/private partnership working to make the Commonwealth the national leader in economic growth. This goal is accomplished by: supporting important economic development, expansion and retention opportunities; providing comprehensive access to state and regional information about site location, expansion and workforce development; attracting, developing, and retaining capable and diverse people to and within our state; and convening and connecting leaders to chart the future of Pennsylvania's economy.

PA Open for Business
http://www.paopen4business.state.pa.us/paofb/site/default.asp

Pennsylvania Open for Business is the result of the Commonwealth's effort to make Pennsylvania the easiest place in the world to start, sustain and expand a business. 
This web site gives entrepreneurs "one stop" access to business information. Entrepreneurs can explore financial options, download many of the important forms necessary to start and expand a business, and electronically register a business with the Pennsylvania Departments of Labor and Industry, Revenue, and State.

Pennsylvania Small Business Development Centers
http://www.pasbdc.org/

The Pennsylvania Small Business Development Centers work with small firms statewide to help them compete and grow in today’s highly competitive global economy.
From helping aspiring entrepreneurs turn ideas into businesses, to helping small firms expand, to providing the information every business person needs to make critical decisions, the Pennsylvania SBDCs are the resource entrepreneurs in all industry sectors can turn to for help – help that can make the difference between success and failure.

U.S. Small Business Administration (SBA)
http://www.sba.gov/

Through an extensive network of field offices and partnerships with public and private organizations, SBA was created in 1953 as an independent agency of the federal government to aid, counsel, assist and protect the interests of small business concerns, to preserve free competitive enterprise and to maintain and strengthen the overall economy of our nation.

PA Department of Community & Economic Development
http://newpa.com/

Find everything you need to succeed in Pennsylvania. Whether you're a business, community, site developer, or concerned citizen, newPA.com has the resources to help you.

Ben Franklin Technology Partners of Central & Northern PA (BFTP/CNP)
http://www.cnp.benfranklin.org/

The BFTP/CNP provides funding and business support services to emerging technology-based companies, as well as small, existing manufacturing businesses in a 34-county footprint. It is part of a statewide network of regional Ben Franklin centers.

Ben Franklin Technology Partners Venture Investment Forum (VIF)
http://www.venture-forum.org/

The Ben Franklin Venture Investment Forum is a nonprofit organization dedicated to promoting entrepreneurialism in Pennsylvania. The Forum fulfills its mission by assisting entrepreneurs in their preparations to seek private equity, helping angels to form and manage angel investment networks, and providing training in various aspects of interest to emerging growth companies.

Harrisburg Young Professionals (HYP)
http://www.HYP.org

HYP is a group of young, active, civic-minded professionals who have a clear vision of Harrisburg's future as a great place to live, work, play, and shop. They are part of a movement which is breathing new life into urban areas and lessening the negative impact of suburban sprawl. HYP is also working to prevent the migration of educated young people to larger cities (often referred to as "brain drain") and to encourage those who have left to return to the Central Pennsylvania region.

International House Harrisburg
http://www.ihousehbg.org/

Located in downtown Harrisburg, the International House was designed to provide a warm and friendly environment where foreign and U. S. students, scholars and interns can live and learn from one another through their everyday activities.

Harrisburg Market Keystone Innovation Zone (KIZ)
http://www.KIZtoolbox.com

A regional partnership consisting of institutions of higher education, entrepreneurial assistance partners and government partners, the purpose of the Harrisburg Market KIZ is to encourage the commercialization of R&D currently occurring at colleges and universities in the Harrisburg region, as well as enhance entrepreneurial activity in the region and create career opportunities for young professionals.

Other Places to Post Internships for Free:
Internships.com (http://internships.com/)
Internship Programs.com (http://internshipprograms.com/home.asp)
Internships USA (http://internships-usa.com/)
Intern Web (http://www.internweb.com/default.asp)
Local Careers.com (http://www.localcareers.com/)
Vault (http://vault.com/index.jsp)
Pennsylvania Career Link