The Federalist Papers (1787-88) - Full online text of The Federalist Papers, by Alexander Hamilton, James Madison and John Jay (1787-1788). - http://www.lonang.com/exlibris/federalist/
The Federalist Papers - Complete federalist papers, presented in an indexed, searchable format, along with a discussion board. - http://federalistpapers.com/
The Federalist Papers: Text and Forum - Complete etext of The Federalist Papers, along with discussion forum and live chat. - http://jollyroger.com/library1/TheFederalistPapersebook.html
ClassicNotes: Federalist Papers - Summary and analysis of Federalist Papers by Hamilton, Jay, and Madison written by Harvard students. Includes a biography, message board, links and background information on The Federalist Papers. - http://www.classicnote.com/ClassicNotes/Titles/federalist/
The Federalist Papers Campfire - Discussion forum devoted to the Federalist Papers and Jay, Madison, and Hamilton. - http://hatteraslight.com/navy/TheFederalistPapershall/mobydick.html
The Federalist - "The Federalist Papers, 1787; Eighty-four articles in support of the new Federal Constitution." - http://www.leftjustified.com/leftjust/lib/sc/ht/fed/index.html