Book websites

thumb|A Bookcrossing in Leipzig southwest of Berlin, Germany, December 2009 thumb|Bookcrossing in Lyon northeast of Nîmes, France, May 2006 thumb|A Bookcrossing at Kozminski University in [[Warsaw, May 2019]]

Anna's Archive is an open source search engine for shadow libraries that was launched by the pseudonymous Anna shortly after law enforcement efforts to shut down Z-Library in 2022. The site aggregates records from Z-Library, Sci-Hub, and Library Genesis (LibGen), among other sources. It calls itself "the largest truly open library in human history", and has said it aims to "catalog all the books in existence" and "track humanity's progress toward making all these books easily available in digital form". It claims not to be liable for downloads of copyrighted works since it does not directly host any files, instead linking to third-party downloads. It has nonetheless been targeted for engaging in large-scale copyright infringement, facing government blocks and legal action from rightsholders and publishing trade associations.

search engine for scientific articles and books

Z-Library (abbreviated as z-lib, formerly BookFinder) is a shadow library project for file-sharing access to scholarly journal articles, academic texts and general-interest books. It began as a mirror of Library Genesis but has expanded dramatically.

digital library about the Dutch language and literature

thumb|upright=0.5|Screenshot of main page Lib.ru, also known as '''Maksim Moshkow's Library''' (, started to operate in November 1994) is the oldest electronic library in the Russian Internet segment.

online archive of anarchism-related written works

volunteer organization and website

Abjjad is an Arabic reading application that was launched in June 2012 by Eman Hylooz. Abjjad offers users the ability to download and read thousands of books offline through its iOS and Android applications. In December of 2020, Abjjad had more than 1.5 million registered accounts.

Flibusta () is a shadow library project mainly for Russian language books. Its collection comprised over 630,000 books. Dissatisfied with the commercialization of Librusec, Russia's main shadow library, the website was established by a group of volunteers in October 2009. The founder and administrator of the site was known as "Stiver", who lived in Germany. The website had been the subject of legal action by Russian publishing houses on several occasions. German police investigated Stiver for two years but took no action against him in 2016. In 2016, the site was blocked in Russia according to

BookFinder.com is a vertical search website that helps readers buy books online. The site's meta-search engine scans the inventories of over 100,000 booksellers located around the world.

Babelio is a French social cataloging website and a mobile app dedicated to literature. It is a social network for users to review books and generate personal library catalogs, which can be shared and commented on by other users.

Runivers () is a site devoted to Russian culture and history. Runivers targets Russian speaking readers and those interested in Russian culture and history.