All Britney Spears Lyrics: The lyrics to all of her albums with song-by-song reviews.
Brit-Mania Lyrics S21: Includes lyirics sorted by albums, and pictures.
Britney Spears Lyrics: Collection of lyrics indexed by popularity and alphabetically.
Lyrically Squared: Britney Spears: Categorized alphabetically by album.
MIT Department of Britneyspearsology: Analyses of several songs, as well as MIDI files.