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 5.5.0 new features:

  • Support the calibre:// URL scheme. Clicking on calibre:// URLs can be used to have calibre perform various actions. For details, see:

  • Viewer: Show calibre:// URL for current book in the Goto->Location panel

  • Edit book: Add an action to the right click menu for tabs to close tabs to the right of the current tab. Closes tickets: 1902518

  • Add ability to copy tag, publisher and author in Book details panel by right-clicking. Closes tickets: 1902413

  • Annotations browser: Add a context menu for common actions. Closes tickets: 1902326

  • Annotations browser: Show a dot for highlights with notes. Closes tickets: 1899839

  • Edit book: Saved searches panel: Allow copying the current saved search to the regular search panel by clicking the Export button. Closes tickets: 1902227

  • Windows: Fix command line arguments not working for the portable.exe launchers

  • Viewer: back and forward buttons on the mouse now trigger the back and forward actions

  • Option to mark all books with annotations/bookmarks. Closes tickets: 1902313

  • Various minor improvements to how keyboard focus is handled in the Tag browser

Bug fixes:

  • Edit book: Fix regression in calibre 5 that caused an error when managing user dictionaries. Closes tickets: 1903294

  • Viewer: Fix previous/next buttons iterating over removed bookmarks. Closes tickets: 1903831

  • Welcome wizard: Fix changing the language causing a empty folder to be created. Closes tickets: 1903825

  • Viewer: Fix regression causing custom shortcuts with shift key pressed not working. Closes tickets: 1903699

  • Viewer: In dark mode when showing images with transparency in the popup use a light background color as most images are designed with a light background color in mind. Closes tickets: 1903423

  • Fix a regression in the previous release that broke conversion of DJVU files. Closes tickets: 1903428

  • Metadata edit: "Set to Undefined" button missing on integer columns. Closes tickets: 1903363

  • Entry remains underlined in Tag Browser after clearing filter. Closes tickets: 1903086

  • XML Catalogs: Fix languages field missing. Closes tickets: 1902126

  • Fix a regression that broke loading of third party plugins that are encoded in an encoding other than UTF-8

  • macOS: Fix viewer not responding to cmd+c to copy text by default

  • Windows: Fix sending email on computers with non-ASCII computer names

Improved news sources:

  • Spectator Magazine

Download: Calibre 5.5.0 for Windows | Portable | Windows 64-bit | ~100.0 MB (Open Source)
Download: Calibre 5.5.0 for MacOS | 143.0 MB
Download: Calibre 5.5.0 for Linux
View: Calibre Home Page | Calibre Screenshot

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