Download portable Calibre 2.16 32-64 bit Multilingual

E-book management without installation.
Download Portable Calibre 32-64 bit Online (0.3 MB) 25/07/14
In first screen enter: 2.16.0 (or 1.48.0 for Windows XP)

Extract and run CalibrePortable.
Default Library in CalibrePortable, edit CalibrePortable.ini to change (must be in same drive).
Settings of installed Calibre should be preserved.