Track your reading and choose your next book based on recommendations from friends and reviews. (Free)

Track your reading and choose your next book based on your mood and your favorite topics and themes. Shows tracking through graphs and charts. (Free)

Create and track a library-quality catalog of your media — books, movies, and music — you own, have read, want to read, etc. (Free)

Create and track a library-quality catalog of your media — books, movies, board games, video games, and music. For personal or school libraries. Subscription includes barcode and patron management, and generates reports. (Free, personal; subscription; school / organization)

Book searching and relevant book suggestions with a robust search engine. Check with your local library to see if they host NoveList. (Subscription or free access through your local library with library card)

Allows you to search for a book based on images on the cover, book cover color, and / or genre. It also allows you to search by topic. (Free and subscription for libraries)

A non-profit digital library that allows access to millions of books, audio recordings, videos, images, and more. They also host the Wayback Machine, the internet archives. (Free)

Track your reading, take smart notes, and organize thoughts by theme or content with easy reference later. Notes are able to be exported. (Free)