Top Alternatives to Project Gutenberg

Amazon Kindle is a series of e-readers designed and marketed by Amazon.com.

Google Play Books (formerly Google eBooks) is an ebook digital distribution service operated by Google. Users can purchase and download ebooks from Google Play, which offers over five million titles, with Google claiming it to be the "largest ebooks collection in the world".

iBooks is an e-book application by Apple Inc. for its iOS and macOS operating systems and devices.

Scribd is a digital library and e-book and audiobook subscription service that includes one million titles.

Internet Archive is a nonprofit digital library which stores a copy of millions of web page history.

Issuu is a free electronic publishing platform for magazines, catalogs, and newspapers.

Yumpu offers a digital platform for publishing your magazines, brochures or catalogs. Communicate your message and grab the attention of new readers.