BiblioEST
DM Cultura S.r.l.
eBiblio
De Marque
Biblio Digital
Odilo
BiblioBoard Library
BiblioLabs, LLC
Libby由OverDrive赛阅提供
OverDrive, Inc.
Google Play 图书
Google LLC
福音图书馆
The Church of Jesus Christ of Latter-day Saints
Audible – 亚马逊有声读物
Audible, Inc.
hoopla Digital
Midwest Tape LLC
Everand: Ebooks and audiobooks
Scribd, Inc.