State government portal
Connecting to all Massachusetts government sites
http://www.mass.gov/portal/index.jsp

Doing Business in Massachusetts
http://www.mass.gov/portal/index.jsp?pageID=cluster&c=doingbusiness

Useful sites for business:
General Court of Massachusetts
Links to members of the State Legislature, track legislation
http://www.state.ma.us/legis/

Commonwealth Communities
Look up detailed information on each of Massachusetts 351 cities and towns.
http://www.state.ma.us/cc/

Massport
Logan International Airport and the Port of Boston are operated by The Massachusetts Port Authority.
http://www.massport.com/

Massachusetts Bay Transportation Authority (MBTA)
Public transit in eastern Massachusetts
http://www.mbta.com/

MassDevelopment
The state’s quasi-public economic development agency
http://www.massdevelopment.com/

Department of Revenue
Tax information, tax forms
http://www.dor.state.ma.us/

Information about starting a business in Massachusetts
http://www.dor.state.ma.us/bsbc/doingbus/doingbus.htm

Consumer Affairs and Business Regulation, Office of Divisions: Banks, Energy Resources, Insurance, Professional Licensure
http://www.state.ma.us/consumer/

Office of Business Development
provides information, guidance, and coordination efforts on everything from site selection and permitting, to financing and workforce development assistance.
http://www.state.ma.us/mobd/

Massachusetts Office of Travel and Tourism
Information and links for visitors and for the tourism industry.
http://www.mass-vacation.com/

Massachusetts Trade Office
MassTrade helps Massachusetts businesses develop markets overseas and seeks foreign investment in Massachusetts.
http://www.state.ma.us/moiti/

Massachusetts Export Office
Works with businesses to promote exports.
http://www.state.ma.us/export/

State Office of Minority and Women Business Assistance
Promotes minority and women-owned businesses and non-profits.
http://www.state.ma.us/somwba/

Commonwealth Corporation
Formerly the Corporation for Business, Work, and Learning, this quasi-public organization is responsible for administering and delivering a wide range of public and privately funded initiatives designed to meet the labor needs of businesses; improve current and emerging workers’ skills; foster career success through lifelong learning; retain, sustain, improve and create job generating businesses.
http://www.commcorp.org/
Southeast Regional Office
http://www.commcorp.org/RegionalMap/Southeast.htm

Corporations Division, Office of the Secretary of the Commonwealth
Repository of records of corporations organized or registered to do business in Massachusetts
http://www.state.ma.us/sec/cor/coridx.htm