SumatraPDF has some really good features which make it a very good competitor to other open source ePub reader software.

It also has built-in conversion feature to batch convert PDF or other supported formats. You can also bookmark a specific page of ePub file.Īpart from these great features, Calibre is also handy to manage PDF and other format files. It can generate and show table of contents for input ePub file. When ePub file is opened, you can go to a particular reference number, increase decrease font size, jump to next and previous pages, show/hide bookmarks, show ePub metadata, etc. CalibreĬalibre is a popular eBook management software for Windows and it is also a very good open source ePub reader. For example, you can change font, font size, background color, font color, book cover color, toggle full screen mode, set speech rate for text to speech, change interface theme, etc. In addition to that, it has a lot of other features. You can listen to your ePub file content. It also comes with read aloud feature which makes it even more useful. It has all important and some additional features which make it a better open source ePub reader. The list of bookmarks can also be accessed separately. You can also switch from light to dark theme mode and vice-versa. The interface is pretty good where you can flip pages like an original book. Cool ReaderĬool Reader is a very good open source ePub reader for Windows. Let’s check these open source ePub reader software one by one. You can convert PDF pages, open PDF file, FB2, AZW3, DjVu file, etc., manage eBooks, show/hide bookmarks, bookmark a page, generate table of contents for ePub, open multiple ePub files on a single interface, and more. These software has other special or unique features also. For example, one software opens separate window to view ePub, another software lets you flip pages virtually, third software can open ePub in single page view mode, etc. Each of these software provide different way to view ePub pages. ePub (stands for Electronic Publication) is an e-book format and those who want open source readers for opening ePub file, this list will be helpful. Here are 5 free open source ePub reader software for Windows.

Best ebook reader for windows 10 2019