Using the personal ebook manager 'Calibre', one can create a local server and make it as public as wanted; MoonReader can then accept it and present it as just another online ebook library, searches and all.
Aldiko offers a free version of the app that features in app advertisements as well as less features. This allows users to try out the app in order to see how well it runs and if they like it in general.
For those that have multiple devices Kobo offers a wide selection of apps ranging from mobile to PC, making for an easy way to have ones collection with them no matter if on their phone, tablet or laptop.
If you click on a footnote, good luck getting back to where you were reading; there is no "back" button. No text-to-speech either. Surprisingly, the app can do both; but both are "features" that have to be enabled by the publisher, and both are only enabled occasionally.
NOOK offers a cloud sync feature that will sync all of the users eBooks, notes, bookmarks as well as read position. This way multiple devices and apps can be used by simply logging into ones own account, to then simply sync everything to enjoy the exact same experience no matter what they are usin...
Despite the fact that the new 4.0 NOOK app supports video and enhanced eBooks, it still does not support purchasing or playing audiobooks. Though Nook does offer a separate app for those that do want the function.