calibre is a free and open source e-book library management application developed by users of e-books for users of e-books.
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DjView4 is a Standalone viewer for DjVu files.
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The eLibrary Project is an ebook organizer with tagging and search capabilities.
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WinDjView is a fast, compact and powerful DjVu viewer for Windows with tabbed interface, continuous scrolling and advanced printing options.
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Guten is a tool to browse, retrieve, read and manage electronic books published by Project Gutenberg.
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FBReader is a free e-book reader for various platforms.
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