LEGISinfo: Information on all federal bills currently before Parliament and from recent Parliaments, dating back to 2001. Also links to debates, parliamentary reports, and other useful documents, dating back to the mid-1990s.
Department of Justice Canada Laws: All federal legislation and regulations, plus their history since 1985, including constitutional law and the Criminal Code. Also links to Department of Justice reports on various justice-related issues.
CanLII: Full-text of legislation from all federal and provincial legislatures.