: A powerful, free, open-source tool often called the "Swiss Army knife" of ebook software.

: A simple, free way to export documents as EPUB.

To develop a paper and export it as an (Electronic Publication) file, you can use several free and professional tools that convert standard word processing documents into reflowable ebook formats. Best Tools for Creating EPUB Papers

: Write your paper, go to File > Download , and select EPUB Publication (.epub) .

: A dedicated tool by The DAISY Consortium designed to convert Microsoft Word documents into accessible EPUB files with one click. Key Steps for a Professional EPUB Getting started with WordToEPUB - The DAISY Consortium

: Import your finished manuscript (Word, RTF, or HTML), fill in metadata like author and title, and hit Convert to generate a clean EPUB file.