Calibre 6.6.1 Apr 2026

While 6.6.1 includes specific bug fixes, it shares the major features introduced in the version 6 branch:

: Index your entire library to search for specific words or phrases inside your books. calibre 6.6.1

: Native support for Apple Silicon (macOS) and ARM (Linux). While 6

Calibre 6.6.1 is an open-source e-book management tool designed to organize, convert, and sync your digital library across various devices. Released as part of the Calibre 6 series, this version emphasizes internal improvements and foundational features like . Core Features of the 6.x Series While 6.6.1 includes specific bug fixes

: The built-in e-book viewer can read text aloud using your operating system's text-to-speech engine.

: Native pinch-to-zoom gestures on touchpads and touchscreens are supported in the viewer.