EPUBReader
EPUBReader is a Firefox addon which lets you read ePub-files just in the browser.
19 Alternatives To EPUBReader
AlReader
Alreader.com - new perspective on reading e-books.
Aldiko
Aldiko is an e-book reader application for the Android operating system.
Amazon Kindle
Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and…
BookFusion
BookFusion lets you read, share, organize, bookmark and sync all your books.
Calibre Web
Calibre Web is a web app providing a clean interface for browsing, reading and downloading eBooks…
Cool Reader
Fast and small cross-platform eBook reader for desktops and handheld devices
Document Viewer
Document Viewer is a highly customizable document viewer for Android. - SufficientlySecure/document-viewer
Freebook Sifter
Freebook Sifter lists free eBooks from various sources.
GoodReader
With GoodReader on your iPhone, iPod Touch or iPad, you can read virtually anything, anywhere.
Google Play Books
Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
Kobo Books
Kobo Books is a best in the class eBooks and eReadering apps for many reasons.
Moon Reader
Innovative book reader with powerful controls & full functions
NOOK
Free NOOK Reading App- available for your iPhone, iPad, Android devices & Windows 8 tablets.
Project Gutenberg
Project Gutenberg offers free ebooks to download.
ReadEra
Read book files in EPUB, PDF, DOC, DOCX, RTF, TXT, DJVU, FB2, MOBI and CHM formats.
Scribd
Unlimited books, audiobooks & comics. Unparalleled discovery. Any device. $8.99/month
Sumatra PDF
Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
The new iPad Pro
10.5 inch - Thinner and better
calibre
Ebook manager, viewer & converter