These eBooks databases are available for free from the San Francisco Public Library and possibly other public liibraries (requires public library card)
To get a library card, apply online (or fill out and print the paper application) and then present a valid photo ID in-person at any SFPL location. The Library does not issue library cards online; you must visit in-person.
Choose from thousands of adult bestsellers and collections for children and teens. Titles are also available in Spanish, Chinese, and Russian. Read or listen to titles in your web browser or download ebooks to your Kindle and other devices using the user-friendly Libby app (Android/iOS).
Get ebooks, audiobooks, comics, graphic novels, and more on demand. Stream content in a web browser or download titles with the hoopla digital app (Android/iOS/Kindle Fire HD).
Unlimited access to 50K+ titles (including O’Reilly books in early release), 30K+ hours of video, case studies from top companies, learning paths, expert playlists, and more—with nearly 1,000 topics to explore in technology and business. Formerly Safari Online Books
DOAB is a community-driven discovery service that indexes and provides access to 51,316 academic peer-reviewed books. All DOAB services are free of charge and all data is freely available.
The Open Research Library (ORL) is planned to include all Open Access book content worldwide on one platform for user-friendly discovery, offering a seamless experience navigating more than 14,000 Open Access books. This vital infrastructure is slated to comprise the most comprehensive collection of peer-reviewed Open Access books accessible for everyone.