It may be facing an uphill battle against the likes of Amazon, but it looks like Kobo's footprint is only continuing to get bigger, with it now matching Amazon with a desktop application of its own for Windows and Mac. That will naturally let you access your current library and buy new books from the Kobo eBook Store, and maintain bookmarks from your Kobo eReader or other devices using the Kobo app. Otherwise, the application is about as simple as you'd expect, with it boasting some basic font customization options and a full-screen mode