Texidium
Kivuto Solutions Inc.
Google Play 图书
Google LLC
ReadEra – pdf, epub 电子书阅读器
READERA LLC
TextNow: Call + Text Unlimited
TextNow, Inc.
Bookshelf
Vital Source Technologies
Libby由OverDrive赛阅提供
OverDrive, Inc.
Text Free: Second Phone Number
Pinger, Inc
Everand: Ebooks and audiobooks
Scribd, Inc.
Obsidian
Dynalist Inc.
밀리의 서재 - 독서와 무제한 친해지리
Millieshelf