This EPUB reader functions like a web browser with multiple tabs. It offers smooth mouse wheel scrolling, a sidebar to show/hide the Table of Contents, zoom in/out, and the ability to change the book cover. Users can also customize the layout with their own CSS.

One of the standout features of this reader is that it supports User CSS, which means you can customize the style of your EPUB books to your heart's content. This makes it easy to create a reading experience that's truly tailored to your preferences.
Another great feature is the smooth scrolling with the mouse wheel, which makes it easy and comfortable to read for extended periods. Additionally, the reader has a customizable sidebar that lets you show or hide the Table of Contents, and it allows you to zoom in and out to change the text size to your liking.
Not only that, but you can even change the cover of your book - adding a personal touch to your reading experience. And, of course, with User CSS you can customize the display style of your books, so you can really make the most out of your reading experience.
Overall, this is a great choice for anyone in need of a robust and versatile EPUB reader. With its many features, smooth performance, and great compatibility, it's definitely worth checking out.
Version 1.0.10:
A multiple tabs EPUB reader
Smooth scrolling with the mouse wheel
Sidebar: show or hide the Table of Contents
Zoom In, Zoom Out: change the text size
Change the book cover
User CSS: customize the display style of the book