Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
Standard Ebooks - Online library of downloadable e-books that focuses on quality and modern standards in typography.
Apple Books - The all-new Apple Books has been redesigned to make finding, reading, and listening to books a beautiful, effortless experience on iPhone and iPad.
Amazon Kindle - Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and...
BrainAB - Crowdsourced essay writing and editing for students. Submit essays ranging from college admission essay questions to exploring the themes found in Shakespeare.
Project Gutenberg - Project Gutenberg offers free ebooks to download.