WorldCat.org is the best library catalog for finding books and resources and is used by students, researchers, and book lovers.

BookFinder is a comprehensive book search engine and price comparison service for finding new, used, rare, and out-of-print books globally.

BookandReader.com is a large online community forum dedicated to discussions about books, writing, publishing, and related media like film and music.

Librairies indépendantes is the best platform for book search and purchase in France, used by book lovers and local readers.

WUtils is an online web utility tool for developers and marketers.