@Voice Aloud Reader (TTS Reader) - @Voice Aloud Reader (TTS Reader) app provides features through which users can open text, pdf, doc, RTF, and various other files to listen to them in real-time.
calibre - Ebook manager, viewer & converter
Text to Speech (MP3 download) - Text to Speech (MP3 download) app offers features that let you create files in mp3 format by entering files in the text format.
FBReader - FBReader is an e-book reader for various platforms. Features:
Text Reader: Text to Voice - Text Reader: Text to Voice is an educational app that allows users to listen to their favorite eBooks text files, documents, and letters in the voice of a large number of narrators and various accents from around the globe.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.