CodeAndReload

This plugin provides the ability to have randomly selected quotes displayed on the admin page, by using a 
shortcode or by using a sidebar widget. The quotes include user-entered quotes, and can optionally include 
excerpts from a user-chosen category and can also optionally include links from a user-chosen links category 
There also is an option for including the lyrics from “Hello Dolly”. The plugin can be used for random 
quotes, rotating testimonials, rotating random affiliate links, or random featured posts. It was inspired by 
the Hello Dolly plugin (hello.php) that comes bundled with WordPress.
<h3>Support</h3>
Technical support for this plugin will be provided via the WordPress plugin forum. Additional support may be 
available at <a href="http://www.codeandreload.com/wp-plugins/nicequotes/" title="Nice Quotes at Code
and Reload">plugin’s homepage</a>.

Nice Quotes Rotator

Allows display of random quotes via shortcode, a sidebar widget, and/or on the admin page. Quotes can be user-entered, post excerpts or links.

libquotes

This plugin adds a Quote of the Day widget to your WordPress blog. Each day a new handpicked quotation will appear on the sidebar of your page.
Note: This plugin connects to (libquotes.com) to generate the quote of the day. See our <a href="https://libquotes.com/terms" rel="nofollow ugc">terms of use</a> for more information.

Quote of the Day by LibQuotes

This plugin adds a Quote of the Day widget to your WordPress blog.

Nice Quotes Rotator vs Quote of the Day by LibQuotes