More about calibre
You can have the 2.83.0 version of calibre 60.23 MB from this source. Kovid Goyal distributes this program 100% for free. The software refers to Productivity, E-books. Versions 2.83 and 2.53 are still the most downloaded ones and can be run on Windows XP/Vista/7/8/8.1/10. The most popular installation files for this tool are calibre.exe and calibre - E-book management.exe. The antivirus analysis of the direct download link proved it to be safe.