Europa / Europe
In Tempore Organi
Organum - Percorsi nell'arte organaria italiana
Organo.net
Istituto Marchigiano di Studi Organari
Accademia Organistica Campana
La pagina dell'organo
Associazione Ameria Umbra e Accademia Organistica Umbra
Associazione Organi Antichi - Un patrimonio da ascoltare Bologna
Associazione Culturale Monsignor Celestino Eccher
Associazione Domenico di Lorenzo
Associazione "Domenico Traeri" per il restauro e la valorizzazione degli organi antichi
InformaMusica
Musica Classica in Italia
Risorse Musica Classica in Italia
Göteborg International Organ Academy - Sweden
Göteborg International Organ Art Center
St Albans International Organ Festival
Organfestival Holland
Festival International Toulouse les Orgues
Troisième Concours d'Orgue de la Ville de Paris - Oct. 99
Académie d'Orgue de Fribourg
International Organ Foundation - Spain
Orgue et Compagnie
Guilde Européenne des Organistes et des Facteurs d'Orgues
Royal College of Organists - UK
The Royal Society of British Organists
Crawley Keyboard Club
Irish Pipe Organ Page
Dublin International Organ & Choral Festival
The Royal School of Church Music
The Royal School of Church Music, Ely Area
Organ Historical Society
Huddersfield Organists' Association
Early Music Festival Queen's University of Belfast
Ulster Society of Organists and Choirmasters - Northern Ireland
Associació Catalana de l'Orgue
Association Nationale de Formation des Organistes Liturgiques - Lyon
Studio for Early Music, Belgrade
Vantaa Baroque Week, Finland
Fédération francophone des amis de l'orgue
(ORGANfax - UK)
Associazione Antegnati - Bellinzona (CH)
Organ classes at the Vienna Conservatory
Kirchenmusik St. Augustin (Vienna, Austria)

Otros Continentes / Other Continents
Association of Young Organists (formerly the Organ Geeks)
American Guild of Organists
    Berkshire
    Boston
    Columbus
    S. Francisco
    (Los Angeles)
S.Francisco Bay Area Organs
Amherst Early Music
Calgary International Organ Festival
Calgary Organ Academy
The Royal School of Church Music America
The Royal Canadian College of Organists
Organ Historical Trust of Australia

Órganos Específicos / Specific Organs
Organ of St. Sulpice - Paris
Orgue au Saguenay-Lac-St-Jean (Quebec - Canada)
Convention Hall - Atlantic City
Organ of St Joseph de Grenoble
Christchurch Town Hall Rieger Organ - New Zealand
Florence Cathedral
Magadino - CH

Fabricantes de Órganos / Organ builders
F.lli Mascioni
Pinchi - Fabbrica Artigiana di Organi
F.lli Ruffatti
Saverio Anselmi Tamburini
Claudio Anselmi Tamburini
Vegezzi-Bossi
J.L. van den Heuvel, Orgelbouw B.V.
Glatter-Götz
Heinz Jäger & Wolfgang Brommer
Pipe Organ Builders and Resources in the British Isles
Mander Organs
Harrison & Harrison
Gober Organs Inc.
Syncordia International - CH
USA & Canada:
Orgues Létourneau Ltee
Casavant - Organ Builders Quebec
Guilbault-Thérien - Organ Builders Quebec
Juget-Sinclair - Organ Builders Quebec
Laliberté-Payment - Organ Builders Quebec
Gary Blaise Early Keyboard Instruments

Revistas y Ediciones musicales / Magazines & Musical Editions
Oxford University Press - Music
Edition Peters
Early Music
The Diapason
Musique Sacrée - L'Organiste
Editions Musicales Chanvrelin
Cathedral Classical - UK