Peter Westwood

This plugin allows you to specify a specifc excerpt for WordPress pages.
The plugin adds an extra box to the set an Optional Excerpt for a WordPress page similar to the box which is available for posts. The box is aded using the dbx_page_advanced hook for versions of WordPress earlier than 2.5 and using add_meta_box() for WordPress 2.5 and later.

PJW Page Excerpt

This plugin allows you to specify a specifc excerpt for WordPress pages.

The Striptease plugin changes WordPress’s default Read More teaser links so that they link to full posts.
WordPress makes it easy to break up long posts so you can save space on your home page. Simply insert the <code></code> quicktag while editing a post, and WordPress will display the text that comes before it as a teaser followed by a Read More link to the rest of the post. When a reader follows the link, the single-post page is loaded and the browser jumps to the unread text.
This jump can be disorienting, and some bloggers prefer to link their teasers to the full posts instead of the unread text.
That’s where the StripTease plugin comes in. It automatically strips the #more fragments from the end of your teaser links and turns them into links to your full posts.
<h3>Example</h3>
The StripTease plugin automatically changes your teaser links from this:
<pre><code>http://guyfisher.com/2005/09/striptease/#more-6
</code></pre>
To this:
<pre><code>http://guyfisher.com/2005/09/striptease/
</code></pre>

StripTease

Strips the #more fragments from the end of Read More teaser links so they link to full posts.

PJW Page Excerpt vs StripTease