Powered by Kobo (which has its own Android app) but with Borders gloss. It looks and works decently enough, but is mostly nice for big Borders shoppers, since it links up to Borders Rewards program.
The app also supports automatic bookmarking and customized font and type sizes. Free. Android 2.0+
From The App Developer: The FREE Borders eReader app lets you: browse and buy eBooks at Borders.com, where you'll find over a million titles, including a generous selection of free books search by title, author, topic, or keyword make quick and easy purchases access your eBook Library download eBooks for offline reading enjoy automatic bookmarking, print quality resolution, smooth transitions between pages and chapters, customized fonts and type sizes.