Federal

American Bar Association
CFR-Code of Federal Regulations
Copyright & Fair Use--Stanford U. Library
Cornell Legal Information
e-CFR (Electronic Code of Federal Regulations)
eLaws Advisors (Department of Labor)
Electronic Law Library
Family Law in the Fifty States
FEDLAW--federal laws, rules and regulations, federal judicial decisions and some state laws.
Federal Register--the Presidential documents, Executive Orders, Notices, Rules and Proposed Rules of federal agencies.
FedWorld Supreme Court decisions
Historical file of Supreme Court Decisions from 1937-1975.
Findlaw
FOIA--Freedom of Information Act
Forms (law, business &  general)
GPO Gate
Citizenship & Immigration
IRS Home Page
JURIST
Law.com
LawCrawler
Law for All (nolo.com)
Legal Survival Web
lexisONE--case law, legal forms
LLRX--Law Library Resource Xchange
Martindale-Hubble Lawyer Locator
Office of the Law Revision Counsel
OYEZ: U.S. Supreme Court Multimedia
United States Supreme Court Opinions--decisions of the United States Supreme Court from 1990 to current.
The Judicial Branch
The U.S. Code (searchable)
Wills on the Web
World Law Direct -- free 24 hours legal help

Massachusetts

Code of Mass Regulations
FindLaw-Lawyer Directory
General Law of Mass
Lawyer Search
LiveJustice - helping low-income residents of Worcester County with housing problems
Mass Driver's Manual
Mass & Federal Legal Forms
Mass. Legislative Tracking System--history of each bill
Mass Lawyers Weekly--full-text decisions from the Supreme Judicial Court and Mass. Appeals Court.
Mass Social Law Firms
Mass Legal Information --housing, family, benefit and health
Mass Trial Court Law Libraries
Sex Offender Registry (MA)