BassMasta: Beatles: Tablature for more than 300 Beatles songs.
Beatles Chord Archive: Collection of tablature and lyrics.
GuitareTab: Beatles: A large alphebetic listing of tablatures and chords with lyrics.
Harmony Central: OLGA: The Beatles: Archives of user-contributed tablature.
Kabish: Beatles: Guitar and bass tablature and chord files.
Rock-Songs: The Beatles: Chords and lyrics to some Beatles songs. Also features a brief biography.
RockMagic: The Beatles: Beatles song lyrics and chords, pro chords, guitar and bass tablature. Related links.
The Beatles: Features chords, tablature, lyrics, discography, and some history. English and Russian translations.
The Beatles Guitar and Audio Site: Guitar and bass chords, and tablature. Audio files in RealAudio, MIDI, and MP2 formats. Downloadable Pop40 database for all songs hitting the charts from 1955 though 1991.
UUNET: Beatles Guitar Chord Archive: FTP-only archive of chords and tablature. Files are .Z compressed.