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Calibre is a complete e-book library manager. Organize your collection, convert your books to multiple formats, and sync with all of your devices. Let Calibre be your multi-tasking digital librarian.

Manage, convert, sync, and more
  • Library management. Calibre keeps things orderly by creating single entries for books that contains multiple formats. Add tags and comments for better searchability.
  • Format conversion. Calibre's robust conversion options support a more...

What's New

Version 2.55.0:
New Features
  • Allow creation of rules to convert arbitrary identifiers into clickable links in the book details panel (Preferences->Look & Feel->Book details)
  • Tag mapper: A new rule type 'split' allows you to easily split tags on a character
  • Make the shutting down message an overlay so it is less disruptive
  • Allow right clicking on Virtual Library more...


  • OS X 10.7.2 or later

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4 308


Current Version (2.x)


Downloads 988,530
Version Downloads 2,912
License Free
Date 19 Apr 2016
Platform Intel 64 / OS X
Price Free
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