Social Q&A - Better audience Q&A for presentations and events
calibre - Ebook manager, viewer & converter
BlueJeans - Blue Jeans Network maintains a cloud-based video collaboration service that enables video conferencing using practically any device.
FBReader - FBReader is an e-book reader for various platforms. Features:
Sparkup - Sparkup is an audience interaction platform for live and virtual meetings and events. Easily create interactive Q&A, word clouds, live polls and quizzes to engage your audience.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.