IceCream Ebook Reader software (version 4.56) is a free e-book reader that supports various formats such as EPUB, PDF, MOBI, FB2, and others. It offers a user-friendly interface with customizable font sizes, backgrounds, and text colors. The software also includes a library manager that allows users to organize their e-books and has features like bookmarks, notes, and highlighting. Additionally, it has a night mode feature that reduces eye strain during nighttime reading.