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
- Edit book: Preview: Support displaying mathematics
- Kobo driver: Add support for the latest firmware version
- Allow copy/pasting dates from columns having different date display formats.
- Closes tickets: 1885004
- Book details panel: When right clicking on tags/authors/etc. allow finding them in the Tag browser easily.
- Closes tickets: 1884343
- Allow selecting individual items to delete in the Check library dialog.
- Closes tickets: 1884402
- Add an option to the wireless device driver to ignore device free space when sending books.
- Viewer: Fix turning pages in paged mode with a high precision touchpad to generate scroll events too fast
- Edit book: Fix pasting files from another editor instance causing unsaved changes in open editors to be lost.
- Closes tickets: 1885455
- Tag browser: Do not show counts for searches as they are always zero
- Check library: Do not abort if there are folders in the library that calibre does not have permission to access.
- Closes tickets: 1884544
- Amazon metadata download: Fix download of ratings not working from amazon.co.jp
- Closes tickets: 1884400
New news sources
- The Print by Kovid Goyal
- Improved news sources
- Popular Science
- Caravan Magazine
- Sports Illustrated
- Gazetta Prawna