calibre - Ebook manager, viewer & converter
Lithium: EPUB Reader - Lithium: EPUB Reader app allows users to read their favorite eBooks after importing it from the internal storage.
FBReader - FBReader is an e-book reader for various platforms. Features:
LibriVox Audio Books Supporter - LibriVox Audio Books Supporter app comes up with an extensive collection of audiobooks through which you can search for your favorite book and listen to it in your native language right at your fingertips.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
FLOOX - FLOOX app allows you to select a book from the internal storage to listen to it in the audio version by selecting the desired text-to-speech settings.