Supreme Court website: The Supreme Court provides transcripts of oral arguments before the Court from October 2000-present. These transcripts are only available in PDF format.
Westlaw: Westlaw offers official transcripts of oral arguments heard by the Court from 1990-present. Westlaw is a fee-based service and a valid Westlaw ID is required for access.
LexisNexis: Lexis offers official transcripts of oral arguments from October 1979-present. LexisNexis is a fee-based service and a valid LexisNexis ID is required for access.
Oyez Project: The Oyez Project provides audio versions of oral arguments in selected cases, including some in MP3 format. A substantial number of high-profile or constitutionally significant cases are included. Cases can be searched by subject using the "Cases" link. Audio links will be listed within the cases if available.