BleepingComputer Review:

Calibre is a free eBook library management application for the Mac with a built-in eBook reader.  This programs supports most eBook file formats so that eBooks purchased for a variety of devices will be compatible.  Calibre also has the ability to sync your library with most major devices including Kindle, Nook, iPad, and Android devices.

Calibre has the following features:

• Library Management
• E-book conversion
• Syncing to e-book reader devices
• Downloading news from the web and converting it into e-book form
• Comprehensive e-book viewer
• Content server for online access to your book collection

Changelog for version 0.8.69:

New Features

• E-book viewer: Add a button to the toolbar to switch themes easily

  Closes tickets: 1047992

• When downloading metadata for many books, if some of them fail, add an option to the downloaded message to show the failed books in the main book list, so that they can be individually processed easily
• Remember last used window size of the conversion dialogs.

  Closes tickets: 1049265

• Kindle driver: Turn on sending of azw3 files to kindles by default, since the KK now has azw3 support
• Conversion: Add support for CSS pseudo classes :hover, :link, :visited, :first-line, :focus, :active, :first-letter
• Wireless device driver: Make the default save template not use folders

Bug Fixes

• Fix a regression in th previous release that broke sending of books to the second SD card in SONY readers

  Closes tickets: 1047992

• Fix a memory leak when scanning for devices in windows
• Ebook-viewer: When displaying mathematics, reflow equations that dont fit on a single line
• Catalogs: Do not mark the AZW3 catalog as a periodical, as most Kindle devices cannot handle AZW3 periodicals
• Content server: When using a custom IP address to listen on via Preferences->Tweaks advertise that IP address via BonJour.
• Fix ebook catalog generation on linux systems where the encoding is not UTF-8.

  Closes tickets: 1048404

New news sources

• History Today by Rick Shang

Improved news sources

• De Volksrant
• Metro UK
• Countryfile
• Die Zeit (subscription)
• Birmingham post