Calibre is a free and open-source e-book management software that allows users to manage their e-books, convert between different e-book formats, and sync e-books with various devices. It was first released in 2006 and has since become one of the most popular e-book management tools available.

One of the most notable features of Calibre is its ability to organize e-books into different categories and add tags, making it easy to search and locate specific books. It also allows users to edit the metadata of their e-books, including the title, author, and cover image, and can even download missing metadata from online sources.

Calibre also provides a powerful e-book conversion tool, allowing users to convert e-books from one format to another, such as from EPUB to MOBI, or from PDF to EPUB. This is particularly useful for those who want to read e-books on different devices that may not support the same file format.

In addition, Calibre supports a wide range of e-book readers, including Amazon Kindle, Barnes & Noble Nook, and Kobo e-readers, and can automatically sync e-books with these devices. It can also connect to online e-book stores, such as Amazon and Google Books, allowing users to browse and purchase e-books directly from within the software.

Calibre is an essential tool for anyone who reads and manages e-books. Its powerful features and easy-to-use interface make it a must-have for anyone looking to organize, convert, and sync their e-book library.

Key Features:

• Library management system to organize e-book collection
• Format conversion for compatibility with different devices
• Built-in editor to modify e-book metadata and table of contents
• E-book viewer with customization options
• Integrated web browser for downloading e-books
• Synchronization options for keeping e-book collection up-to-date across devices
• Extensible with plugins to add additional features and functionality.

• Show the number of currently selected books in the status bar at the bottom of the book list
• Driver for PocketBook Touch 623 and Yarvik tablet Xenta 13c

  Closes tickets: 1182850, 1181669

• When editing dates such as published, allow pressing the minus key to clear the date and the = key to set the date to today.

  Closes tickets: 1181449

• EPUB/AZW3 Output: Fix regression that caused erros when trying to convert documents that have URLs with invalid (non-utf-8) quoting.

  Closes tickets: 1181049

• When backing up metadata automatically remove XML invalid chars, instead of erroring out
• ebook-viewer: Fix --debug-javascript option causing an error when running from a binary build on os x and linux
• Fix switch library dialog and menu both popping up when clicking the library button in some window managers
• Apple driver: Fix a regression in 0.9.31 that could cause sending books to the device to hang
• When setting metadata using the edit metadata dialog, convert newlines, tabs etc. to normal spaces

  Closes tickets: 1182268

• EPUB/AZW3 Output: Fix pages that contain only an svg image being regarded as empty and removed during splitting
• AZW3 Input: Handle files that use unnecessary svg: prefixes.

  Closes tickets: 1182257

• EPUB Input: Handle EPUB files that have no section in their OPF.

  Closes tickets: 1181546

• Get Books: Fix Foyles UK store plugin.

  Closes tickets: 1181494

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