Calibre is an open source e-book library management application that enables you to manage your e-book collection, convert e-books between different formats, synchronize with popular e-book reader devices, and read your e-books with the included viewer.

It acts as an e-library and also allows for format conversion, news feeds to e-book conversion, as well as e-book reader sync features and an integrated e-book viewer.

Calibre's features include: library management; format conversion (all major ebook formats); syncing to e-book reader devices; fetching news from the Web and converting it into ebook form; viewing many different e-book formats, giving you access to your book collection over the internet using just a browser.

Calibre 5.9.0 new features:

  • Annotations: Allow exporting highlights and bookmarks in Markdown format, with a link to open the book at the highlight location

  • Content server viewer: Allow exporting all highlights. Closes tickets: 1909529

  • Icon rules editor: Add a button to open the icons folder. Closes tickets: 1909339

  • Quickview: Dropdown menu for all selectable columns. Closes tickets: 1909258

Bug fixes:

  • Fix a regression that caused the Content server to crash if a client closed a connection during a file transfer on macOS and Linux.

  • LRF Output: Fix conversion broken in calibre 5 when font size rescaling is active. Closes tickets: 1909224

  • E-book viewer: Cancel any speech in progress when hiding the selection popup bar after triggering the speak aloud action on it

  • Color/icon rules editor: Fix duplicate rule button not working correctly. Closes tickets: 1909332

  • Fix dropping files onto book details causing an error if the confirmation dialog is disabled. Closes tickets: 1909291

New news sources

  • Mallorca Zeitung by VoHegg

  • T-Online by VoHegg

  • El Diario by Dirk Gómez

Improved news sources:

  • General Knowledge Today

  • El Pais

  • USA Today

  • WirtchaftsWoche Online

  • The Guardian

  • Arcamax

  • Miami Herald

  • The Seattle Times

Download: Calibre 5.9.0 for Windows | Portable | Windows 64-bit | ~100.0 MB (Open Source)
Download: Calibre 5.9.0 for MacOS | 144.0 MB
Download: Calibre 5.9.0 for Linux
View: Calibre Home Page | Calibre Screenshot