Grant O'Brien Early Keyboard Instruments: Information about maker's work as a scholar and researcher specialising in Neapolitan instruments, and as a practical maker and conserver of early keyboard instruments.
Jan Van den Hemel - Stringinstruments & Piano Fortes: Builds historical string instruments and piano fortes. Restores historical instruments. Articles on history of the piano.
Klinkhamer & Partners, Harpsichord and Fortepianomakers and Restorers: Shows the Harpsichords currently made. Restoration report of an early Clementi Fortepiano.
Paul Poletti: Maker and restorer of Historical Keyboard Instruments in Utrecht, Netherlands. Includes a history of the piano and a guide to tuning and temperaments.
Paul Y Irvin Instrument Maker: Early Keyboard Instruments and professional services.
Perez Robledo, Leopoldo: Buenos Aires based builder of harpsichords, organs, clavichords and fortepianos. Instruments available and links including an annual concert cycle.
The Music Room Workshop: Makers and Restorers of Early Keyboard Instruments. New Harpsichords, Spinets, Clavichords and antique Square Pianos for sale. Restoration service for all early keyboard instruments.
Tony Chinnery Early Keyboard Instruments: Builder of copies of original harpsichords and other keyboard instruments near Florence in Italy. Catalogue of instruments made. MP3 samples.
Vogel-Scheer: German maker of a range of instruments. Tips on voicing bird quill, rose-making and re-stringing.