Bookself
Bookself AB
Bookshelf
Vital Source Technologies
Bookmory - 阅读记录, 阅读打卡签到, 读书日历
Tony soft
Bookshelf-Your virtual library
SquidBit
Bookly: Book & Reading Tracker
SC TWODOOR GAMES SRL
FBReader Bookshelf
FBReader.ORG Limited
Luna - Book & Reading Tracker
JGG Development
Myanmar Bookshelf
Library Myanmar
Book Reading Record - Tracker
Kristopher Studios
리딩앤
iPortfolio Inc.