calibre portable installer 2 21 0

Version 2.21 (Released 13 March 2015) of Calibre for Windows (Vista, 7, and 8).

Calibre is a free and open source e-book library management application developed by users of e-books for users of e-books.

The calibre portable build can be run on any windows computer running at least Windows Vista. It is self contained, your calibre libraries and settings are all kept together in one place.

Calibre is licensed under the GNU GPL3.

Official site: calibre-ebook.com

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Changes in 2.21
New Features
Allow opening ebook files and covers in external applications by simply right clicking on them in the Book Details panel. Now, you can right click on an ebook format or the cover in the Book Details panel, and open it with any application installed on your computer. calibre will automatically present you with a list of application capable of opening the file. Simply choose one, or if your particular application is not auto-detected, you can browse for it manually.
Tag Browser: Make rename and delete for items in the Tag Browser restrict themselves to the current Virtual Library (if any). There is also an additional menu entry you can use to rename and delete across all books while in a Virtual Library.
Conversion: Use a new (written from scratch) implementation of CSS Level 3 selectors that fixes various bugs in handling of the more advanced/uncommon CSS selectors such as nth-last-child()
Edit Book: Allow restoring of disabled confirmation prompts in preferences and add a confirmation when removing saved searches
Edit ToC button: Remember the last used ebook formats