Believe it or not, it's been two years since the Calibre 3.0 series was introduced, and now, the time has come for fans of the best free ebook management software to get a brand-new release that introduces new technologies and new features, along with dozens of improvements. Highlights of the Calibre 4.0 release include a completely re-written ebook viewer that focuses on presenting the book text to users without any kind of distraction, and new capabilities for the Content server to edit metadata, add or remove books, as well as to convert books to and from all of Calibre's supports formats.
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