Pocket - When you find something you want to view later, put it in Pocket.
calibre - Ebook manager, viewer & converter
Feedly - The content you need to accelerate your research, marketing, and sales.
FBReader - FBReader is an e-book reader for various platforms. Features:
NewsBlur - NewsBlur is a personal news reader that brings people together to talk about the world.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.