ePUB (electronic publication) is a free and open e-book standard by the International Digital Publishing Forum (IDPF) known as EPUB or EPub. It is used in Barnes & Noble Nook, Sony Reader, iPhone/iPod Touch (using various e-book apps), and more.

BookReader is the e-reader for all files. It supports EPUB, MOBI, PRC, AZW, FB2, Microsoft DOC, RTF, RTFd, xHTML, Webarchive and TXT. No matter what type of ebook you have on file, you can read it on BookReader. It only supports DRM-free files, though, so make sure your digital books don't have digital rights protections before you try to use it.

Sumatra PDF for Windows can be used to open Epub files:

Sumatra is PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR all in one reader for Windows. You can use Sumatra PDF to open any EPUB files. Actually I like the simplicity of Sumatra PDF alot. Also it is very fast,small and portable. Just install this software and forget about any alternatives as now you can read any type of ebooks on your Windows specially the Epub one. You can use Sumatra PDF to open Epub files on your Windows 7 , Windows 8 and Windows 8.1 computer very easily.

IceCream Ebook Reader Best EPUB reader for Windows 10, Windows 8.1 , Windows 8 and Windows 7

Free E Readers For Android

1. Recommended: How to Convert PDF to Word on Mac For Free #2. EPub: ePub or ePublication is another ebook format that is popular amongst readers. It is a standard format for many e-readers such as iBooks, Kindle, and Google books. Most of the eBook creation tools do offer this format. Mobi: Mobi is also known as Mobipocket Reader.
2. Feb 16, 2008 Palm Reader for Macintosh takes today's top-ranked eBook reader to Macintosh desktop and notebook computers and gives you the greatest flexibility to read your eBooks anywhere anytime for free.
3. Adobe Acrobat Reader DC software is the free global standard for reliably viewing, printing, and commenting on PDF documents. And now, it's connected to the Adobe Document Cloud − making it easier than ever to work across computers and mobile devices.

Download it from here
This is a top notch EPUB reader with so many functionality and features. It’s free. It supports Windows 8, Windows 7, Windows Vista and XP. You can manage your digital eBook library in EPUB, MOBI, PDF, FB2 and other formats. You can check how many pages left, search words, bookmark pages, choose whether to read in Fullscreen mode or Night mode, etc. Once you download this epub reader for Windows 10 or Windows 8 , I am sure you will just get amazed so much that you will not try other alternatives. Unfortunately, Icecream epub reader is available only for Windows. If you want EPUB reader for your MAC or Linux please try other options which I have listed below.

FbReader for Windows Linux and MAC as epub reader:

Fbreader can open any ePub format files on your Windows, Linux, Mac OS X , Android , Blackberry devices very easily. Very fast and will be responsive to your device. You can also use this reader in your Windows 8 or Windows 8.1 and read your ePub files.

Stanza for Mac:

Stanza for Mac is an e-book reader for Mac OS and iOS devices which can open ePub files very easily. Neat and clean interface which will make you feel comfortable.

MobiPocket ePub Reader for Windows

MobiPocket can be used in Windows PC,Blackberry ,Windows Mobile ,Symbian Os ,Palm Os. Its very light weight software and will never slow your PC. I loved this software and it used to be my favourite ePub reader unless I find FBreader which is also good epub reader.

Cool Reader for Windows and Linux

Cool Reader works on both Linux and Windows platform. So if you are using Linux and can’t figure out how to open epub files on your Linux Computer you should try cool reader. 🙂

Epub File Reader for Windows

Epubfilereader is very small sized yet effective software which can open epub files . You will be able to read any epub format books on your Windows PC without compromising quality and screen size. Enjoy this free software 😀 .

Epub Reader Firefox addon

No need to download any software and you can use this awesome Firefox plugin to open epub files from any platform and any devices any time. This is the best choice for me because I can read epub files on the go using Epub Reader Firefox addon.

Free E Readers For Mac Computers

MagicScroll For Chrome

To read epub files install MagicScroll For Chrome. Once installed go to

MagicScroll.net

To Add any epub which you want to read click on Add a book to your Library button

Now upload the file from your Hard-disk and then it will be added to your library. Now open this book by clicking on the coverpage. You will feel like you are reading on a ebook reader because of its Magic Scroll :p lol.

Other free Epub reader tools:

Conclusion

All these tools are great and now its upto you which one you will choose. Now you will be able to read epub files from your windows,linux or even Mac OS X. I have tried my best to collect best tool but its not a complete list. I might have missed some other wonderful tools . We would like to hear from you. Please tell us any other tool you found very helpful. If you face any problem don’t forget to comment below.