BiblioTU
NTT DATA Italia
Biblio Digital
Odilo
BiblioBoard Library
BiblioLabs, LLC
BiblioRoma
DM Cultura S.r.l.
Biblio
Publizon A/S
Google Play 图书
Google LLC
Amazon Kindle
Amazon Mobile LLC
Audible – 亚马逊有声读物
Audible, Inc.
福音图书馆
The Church of Jesus Christ of Latter-day Saints
Libby由OverDrive赛阅提供
OverDrive, Inc.