Calibre is a feature-rich eBook management utility that enables you to view, edit, find, and convert eBook files with minimum effort. This open-source program provides you with plenty of integrated tools, offers quality results in no time, and brings a straightforward interface so that any Mac user can handle its functions.
I like the fact that this app works with a wide range of eBook formats, like EPUB, RTF, DOC, PDF, LRF, MOBI, and many others. After you select the input files, this program allows you to edit their metadata, convert them to other formats, read their text content, and much more.
Furthermore, the tool comes with a built-in utility that helps you find eBooks written by various authors from dozens of website sources, such as Amazon, Barnes and Noble, Ebookpoint, and many others.
Another good aspect about this program is that it preserves original layout of the input files when using the integrated Ebook converter.
Cutting a long story short, Calibre proves to be a reliable solution when it comes to managing eBook files on your Mac. The application is available in many languages, doesn't require any advanced eBook management skills, and comes without a price tag. Hence, I can't find any reason why you shouldn't give this program a try.