Issuu - Issuu is the leading digital publishing platform delivering exceptional reading experiences of magazines, catalogs, and newspapers.
calibre - Ebook manager, viewer & converter
Yumpu.com - The UK’s favourite all-inclusive online magazine package
FBReader - FBReader is an e-book reader for various platforms. Features:
Scribd - Unlimited books, audiobooks & comics. Unparalleled discovery. Any device. $8.99/month
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.