Calibre Portable 3.39.1

Calibre Portable is a free and open-source e-book management software that allows users to organize, convert, and read their e-books in various formats. The software features a user-friendly interface that makes it easy to navigate and customize. It also includes advanced features such as metadata editing, e-book conversion, and syncing with e-book readers. Additionally, Calibre Portable enables users to download and manage e-books from various online sources.