The best alternatives to Search Best Sellers are iam8.tv, TheReviewIndex, and Goodreads for Amazon. If these 3 options don't work for you, we've listed a few more alternatives below.
TheReviewIndex is an Amazon review summarizer using neural networks. TheReviewIndex aggregates user reviews from Amazon.com, uses Neural Networks to create feature-wise summary scorecards at real time, and shows you what's broken & what's not.
Always forgetting to see what Goodreads has to say about a book before you buy it? With the Goodreads for Amazon Chrome Extension, you can read high-quality Goodreads reviews on the Amazon product page, without having to leave the site.