calibre is a free and open source e-book library management application developed by users of e-books for users of e-books. It has a cornucopia of features divided into the following main categories: * Library management * E-book conversion * Syncing to e-book reader devices (note, no direct USB/MTP access in the OpenBSD package) * Downloading news from websites/RSS feeds and converting into e-book form * Comprehensive e-book viewer * Content server for online access to your book collection * E-book editor for the major e-book formats
WWW: https://calibre-ebook.com/