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 Home » Freeware Downloads » Office, Home Office and Writing » Calibre for Mac 3.19.0   
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Calibre for Mac 3.19.0
Calibre is a free and open source e-book library management application developed by users of e-books for users of e-books. It has a cornucopia of features divided into the following main categories:

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
E-book editor for the major e-book formats

Calibre started life on 31 October, 2006, soon after the release of the SONY PRS-500, the first e-ink based reader to be sold commercially in the US. At the time, I was a graduate student, with a lot of time on my hands. The PRS-500 did not work at all with Linux, my operating system of choice, so I decided to reverse engineer the USB protocol that it used, to get it working on Linux. This was accomplished with the help of the fine folks over at and calibre was born, albeit named libprs500.

At the time there were no satisfactory tools to convert content into the LRF format, used by the SONY reader, so I decided to implement a converter to convert the most popular e-book formats to LRF. This converter proved to be wildly popular and far better than the (mostly non-existent) offerings from SONY. It was picked up and used by various publishing houses and content digitizers to produce the first generation of books in the LRF format.

As my e-book collection grew, I realized that managing it was quickly becoming unwieldy, so I decided to write a graphical interface to libprs500 to make it easier. This became calibre, in its present form, as a comprehensive e-book management tool. libprs500 was renamed to calibre in mid-2008. The name calibre was chosen by my wife, Krittika. The libre in calibre stands for freedom, indicating that calibre is a free and open source product, modifiable by all. Nonetheless, calibre should be pronounced as cali-ber, not ca-libre.

Today calibre is a vibrant open-source community with half a dozen developers and many, many testers and bug reporters. It is used in over 200 countries and has been translated into a dozen different languages by volunteers. calibre has become a comprehensive tool for the management of digital texts, allowing you to do whatever you could possibly imagine with your e-book library. Reading is very important to me and one of my goals has always been to prevent either the fragmentation or the monopolization of the e-book market by entities that care solely for short-term goals. As the calibre community continues to grow, driven by book lovers, for book lovers, hopefully it will always present an alternative for people that love to read e-books and want to be in control of their own digital libraries.

calibre 3.19
Thursday, March 08, 2018, 8:30 PM
New Features

Driver for the new PocketBook 740
Allow using relative URLs in comments type metadata. The relative URLs are interpreted relative to the book folder in the calibre library
Edit book: Reports: Do not show characters from the HTML markup in the characters report.
Allow adding the Virtual library button to any toolbar/menu via Preferences->Toolbars & menus

Bug Fixes

Server: Fix server becoming unresponsive if a client sends invalid SSL data at exactly the right moment
Conversion heuristics: Make unwrapping recognize Georgian letters as well.
Make de-serialization of stored conversion options safe against maliciously crafted input
E-book viewer: Change the file format used to import/export bookmarks to use JSON. This prevents malicious bookmarks files from causing code execution.
Make the history completion for the search and replace edit box case-sensitive.
PDF Output: When the input document contains multiple anchors with the same value, use the first anchor rather than the last. This follows browser behavior.
FB2 Input: Add

content to silence the useless epubcheck

Downloads Views Developer Last Update Version Size Type Rank
968 3,895 Kovid Goyal <img src=""border="0"> Mar 09, 2018 - 11:53 3.19.0 75.5MB DMG 5/5, out of 5 Votes.
File Tags
3.19.0  Calibre  for  Mac  
Download Time
56Kbit Modem:  3h 8m 30s  · 256Kbit:  41m 14s  · 1Mbit:  10m 19s  · 5Mbit:  2m 4s

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