FindLaw - Provides access to the full text of U.S. Supreme Court cases 1893+, U.S. Courts of Appeals, federal district court decisions, U.S. State laws, cases and codes, and more.

LII HERMES - The Legal Information Institute offers Supreme Court opinions under the auspices of Project Hermes, the court's electronic-dissemination project.  Contains full text of Supreme Court opinions issued since May 1990. Search by topic, keyword, year, docket # or opinion author. (See "Decisions from 1990-present.")