An e-book catalog maintained by the University of Pennsylvania, which helps users find books and documents that can be read for free on the Internet.
Online e-book catalog
Click the "Visit Site" button on this page to open the official The Online Books Page website, then follow its on-screen instructions.
The Online Books Page is accessed online through your browser, so there is usually no local installation. Refer to its official site for details.
You can browse comparable reading sites under the e-books category on this site and pick the one that fits you.