Is there any module/script available which reads/views EPUB files in a web browser?
If it's available in any PHP framework like Symphony, CakePHP or any other it would be of great help.
Epub.js is a javascript library for rendering ePub's in the browser, across many devices. https://github.com/futurepress/epub.js/ It's very easy to use epub.js with php. I wrote a module to integrate it with Drupal https://drupal.org/project/epub.