PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
calibre - Ebook manager, viewer & converter
Clever - syncing between education applications for K-12 schools
FBReader - FBReader is an e-book reader for various platforms. Features:
Claroline - Claroline is a collaborative eLearning and eWorking platform.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.