Open source pdf, djvu, xps, comic book (cbz, cbr, cbt) and tiff file viewer. Page scrolling is realized by screen touch (for more details see Menu/Settings/Tap Zones). Application features: * Outline navigation * Bookmarks support * Page navigation by screen taps + Tap Zones + Key binding * Text selection * Single word selection by double tap with translation in external dictionary * Custom zoom * Custom manual and auto border crop * Portrait/landscape orientation * Support different navigation patterns inside page (left to right, right to left) * External Dictionaries support * Built-in file manager with recently opened file view Orion Viewer is free, open source (GPL) project. To donate this project, you can buy Orion Viewer: Donation 1$, 3$ or 5$ package from market