Open Library is described as 'Editable online catalog aiming to archive every published book, offering user-contributed entries, metadata, digital lending, and free access to over one million Public Domain titles' and is a popular website in the news & books category. There are more than 25 alternatives to Open Library, not only websites but also apps for a variety of platforms, including iPhone, Android, iPad and Android Tablet apps. The best Open Library alternative is Goodreads, which is free. Other great sites and apps similar to Open Library are BookWyrm, Google Play Books, inventaire.io and LibraryThing.