Europa / Europe
In Tempore Organi
Organum - Percorsi nell'arte organaria italiana
Organo.net
Accademia Organistica Campana
Associazione Ameria Umbra e Accademia Organistica Umbra
Associazione Organi Antichi - Un patrimonio da ascoltare Bologna
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
Organfestival Holland
Festival International Toulouse les Orgues
Académie d'Orgue de Fribourg
Guilde Européenne des Organistes et des Facteurs d'Orgues
Royal College of Organists - UK
The Royal Society of British Organists
Irish Pipe Organ Page
Dublin International Organ & Choral Festival
The Royal School of Church Music
Huddersfield Organists' Association
Early Music Festival Queen's
Ulster Society of Organists and Choirmasters - Northern Ireland
Associació Catalana de l'Orgue
Studio for Early Music, Belgrade
Fédération francophone des amis de l'orgue
(ORGANfax - UK)
Associazione Antegnati - Bellinzona (CH)

Otros Continentes / Other Continents
American Guild of Organists
    Berkshire
    Boston
    Columbus
The Royal School of Church Music America
Organ Historical Trust of Australia

Órganos Específicos / Specific Organs
Organ of St. Sulpice - Paris
Orgue au Saguenay-Lac-St-Jean (Quebec - Canada)
Christchurch Town Hall Rieger Organ - New Zealand

Fabricantes de Órganos / Organ builders
F.lli Mascioni
Pinchi - Fabbrica Artigiana di Organi
F.lli Ruffatti
Saverio Anselmi Tamburini
Claudio Anselmi Tamburini
Vegezzi-Bossi
Glatter-Götz
Mander Organs
Harrison & Harrison
Gober Organs Inc.

USA & Canada:
Casavant - Organ Builders Quebec
Guilbault-Thérien - Organ Builders Quebec
Juget-Sinclair - Organ Builders Quebec

Revistas y Ediciones musicales / Magazines & Musical Editions
Early Music
Editions Musicales Chanvrelin