Jonathan Brinley

The standard excerpt field will appear on pages, just as it does on posts.
Additionally, there is a new widget to display the excerpt of a selected page.
Created by <a href="http://flightless.us/" rel="nofollow ugc">Flightless</a>

Page Excerpts

The plugin is built for something very specific, and does it perfectly.

Simple but effective

Adds an excerpt field to pages, and provides a widget for displaying page excerpts

Stephanie Leary

A widget that lists your most recent posts with excerpts, optionally limited to a category. The number of posts and excerpts is configurable; for example, you could show the titles of five posts but include the excerpt for only the two most recent. Supports <a href="http://robsnotebook.com/the-excerpt-reloaded/" rel="nofollow ugc">the_excerpt Reloaded</a> and <a href="http://sparepencil.com/code/advanced-excerpt/" rel="nofollow ugc">Advanced Excerpt</a> for excerpts with HTML formatting.
New! Supports displaying post thumbnails along with excerpts. Widget options let you place the thumbnails above the title, in between the title and the excerpt, or below the excerpt.
Now on <a href="https://github.com/sillybean/Recent-Posts-with-Excerpts" rel="nofollow ugc">GitHub</a>.
<h4>Translations</h4>
<ul>
<li>Serbo-Croatian (sr-RS) by <a href="http://www.webhostinghub.com" rel="nofollow ugc">Borisa Djuraskovic</a></li>
</ul>
If you would like to send me a translation, please write to me through <a href="http://stephanieleary.com/about/contact/" rel="nofollow ugc">my contact page</a>. Let me know which plugin you’ve translated and how you would like to be credited. I will write you back so you can attach the files in your reply.

Page Excerpts vs Recent Posts with Excerpts