Ginchen

Easily configurable book display with sidebar widget and shortcode. Book information is read from Amazon Web Services (AWS) and gets cached in database.
Key features:
<ul>
<li>Search for your current read book by title and / or author (new)</li>
<li>Search for your current read book by ISBN</li>
<li>Easy setup of fonts and colors with live preview (new)</li>
<li>Ready for <a href="http://www.code-styling.de/english/development/wordpress-plugin-codestyling-localization-en" rel="nofollow ugc">Codestyling Localization</a> plugin</li>
</ul>
Requirements
<ul>
<li>PHP version >= 5.1.2</li>
<li>free <a href="https://aws-portal.amazon.com/gp/aws/developer/registration/index.html" rel="nofollow ugc">AWS Account</a></li>
</ul>

I am reading (continued)

This is a re-upload of the (again) abandoned plugin "I am reading". Book display with search by ISBN, title and author for all Amazon market …

whiletrue

Reading Time shows the estimated reading time of the post, in seconds or minutes. 
The estimate is automatic; a custom value for a single post can be inserted using a Custom Field named “readingtime”.
For more info: https://www.whiletrue.it/reading-time-for-wordpress/

Reading Time

Reading Time shows the estimated reading time and puts an animated progress bar inside the post.

I am reading (continued) vs Reading Time