calibre - Ebook manager, viewer & converter
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
FBReader - FBReader is an e-book reader for various platforms. Features:
WebEx - Cisco WebEx Web Conferencing, Online Meetings, Desktop Sharing, Video Conferencing
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
GoToMeeting - GoToMeeting is a web conferencing service offering a range of services which are available on Mac, PC, iOS and Android devices.