First of all, it’s absolutely free and it’s an open source software.
This Vibosoft ePub Editor Master is an excellent program to edit ePub books. If you are knee-deep in the Apple ecosystem, iBooks is the best e-reader on your Mac. As for the features, iBooks on the Mac has most of the same tools and themes as iBooks on iPhone and iPad, like color options, text size and style customizations, highlighting tools, dictionary lookup, notes, sharing, illustration rendering, voice over, and more. Best app for editing epub on a mac computer. However, go into the full-screen view by pressing “ Command + Option + F ” and you will see just why this app is one of the most beautiful eBook readers available on the Mac. It has a clean UI, even in windowed mode. IBooks is Apple’s stock eBook reader app, and it is exactly what an eBook reader for a laptop should be.