Amazon Kindle dual-screen e-reader patent granted, Barnes & Nobl.
Amazon Kindle 3. Amazon Kindle DX. Kindle Vs Nook. Over the past few years, the market for eReaders has grown exponentially. Competition between eReader products like Kindle from Amazon and Barnes & Noble's Nook is only increasing by the day. Both products have their positives as well as limitations. It will be interesting to see what new improvements have been incorporated by these companies in their respective products. Taking into account the improvements made to these products, it is quite a tough job to compare them. While Kindle has the trust of the majority of eReader buyers, Nook is kind of a rebel, challenging the established order. Kindle Boards - Index.