Calibre 6.19.1 Portable

Calibre free software and open source to manage e-books is that mass audiences and fans of electronic books this program develop and availability of reading, putting up new experience in study brings gave the program on different platforms applicable to allowing users to sort a collection of electronic books may be of different formats (including Kindle Mobi and Nook EPUB) as well as the ability to transform their support to each others e-book formats. The program in 2006 as libprs500 and basic features of reading program was born, in 2008 the name was changed Calibre program and now as one of the top e-reader software used by the public.
calibre works on Windows 8 and 10.
64bit calibre can be installed at the same time as 32bit calibre. The two calibre installs will use the same book library, plugins and settings.
If you are using Windows 7 or Vista please, use v3.48, which works with all Windows 7/Vista machines, from here. Simply un-install calibre and install 3.48, doing so will not affect your books/settings.
The software is free and no registration required.
Download Calibre 6.19.1 Multilingual x64
Download Calibre 6.19.1 Multilingual Portable
Download Calibre 5.44 Multilingual x86
Download Calibre 5.44 Multilingual Portable
Download last version compatible with Windows 7
32-bit: 118 MB
64-bit: 156 MB
Portable: 141 MB