Mac OS X 10.6 Snow Leopard , Mac OS X 10.7 Lion , Mac OS X 10.8 Mountain Lion , Mac OS X 10.9 Mavericks , Mac OS X 10.10 Yosemite , Mac OS X 10.11 El Capitan , Mac OS X 10.12 Sierra , Mac OS X 10.13 High Sierra , Mac OS X 10.14 MojaveWindows 7 (Seven) , Windows 8 , Windows Server 2012 , Windows 8.1 , Windows 10 , Windows Server 2016 , Windows 11
This program is called "Calibre". It is a program to manage your e-book collection. It acts as an e-library and also allows for format conversion, news feeds to e-book conversion, as well as e-book reader sync features and an integrated e-book viewer.
It features library management, format conversion (all major ebook formats), syncing to e-book reader devices, fetching news from the Web and converting it into ebook form, viewing many different e-book formats, and giving you access to your book collection over the internet using just a browser.