Providing catalog information, digital resources, ancient manuscripts and documents, specialized databases, as well as public cultural services, serves as an essential entry point for searching for Chinese books and historical materials.
National Comprehensive Library of China
Click the "Go to Visit" button on the page, and you will be redirected to the official website of the National Library. Follow the instructions on that page to use the services online.
国家图书馆 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.