[Update] Calibre 9.12.0

"calibre is a feature-rich e-book library management application with a variety of useful functions including viewer, addendums, editor, online book and news search/download.
The software can perform detailed searches, convert between formats including e-books to device-specific formats, batch metadata tools, and a content server for online access to your collection.

The program syncs automatically with many different physical devices.
It supports a variety of ebook and document formats.

Cross-platform with clients available for Mac and Linux."

https://www.portablefreeware.com/index.php?id=2119

Home Page
https://calibre-ebook.com/

Changelog
https://calibre-ebook.com/whats-new

FossHub Review
https://www.fosshub.com/Calibre.html