BookRank is an independent book-ranking and discovery platform published by Bril Brothers Innovation Labs sp. z o.o. It helps readers find books and series through rankings across 36 categories, including fantasy, science fiction, mystery, romance, horror, classics, and children’s literature. The site combines more than 1.7 million reader ratings from Open Library, Google Books, Hardcover, and Wikidata into transparent scores, using a published method that normalises ratings and accounts for the number of readers behind them.

Visitors can explore top-rated and most-rated books, browse recent releases, discover recommendations by mood or theme, and search for specific titles. BookRank also ranks series based on ratings across their volumes and provides reading-order guides, including information on volume counts and whether a series is finished. Additional resources include author listings, category rankings, an API, and open data. New releases and rankings are refreshed regularly, with new books added daily. The platform states that its rankings rely on open-source data rather than closed or scraped sources, and notes that some links to Amazon are affiliate links.