Large full-text database of news, cases, law reviews, company information, country information, and more, including Shepard's Citations Service. Also known as LexisNexis.
Collection of US Congressional legislative documents, including reports, hearings, legislative histories, and more.
Avalon Project -- collection of documents "relevant to the fields of law, history, economics, politics, diplomacy and government." International in scope. Includes documents dating back to Ancient Greece. Searchable, and browsable by date, subject, author, and title
The Oyez Project "a multimedia archive devoted to the Supreme Court of the United States and its work. It aims to be a complete and authoritative source for all audio recorded in the Court since the installation of a recording system in October 1955. The Project also provides authoritative information on all justices and offers a virtual reality 'tour' of portions of the Supreme Court building, including the chambers of some of the justices."
Legal Information Institute (Cornell University) -- extensive materials on the law: brief summaries of law topics, with links to key primary sources; state and federal constitutions and codes; federal and state judicial opinions; federal, state, and international law by source or jurisdiction and more