Alex Mansfield

This plugin allows you to display an unordered list of links to a specific author’s latest posts (or a list of multiple authors). It can be called either with a shortcode or from within a theme file.
To call it with a shortcode, use <code>[latestbyauthor author="username" show="3"]</code> where “username” is the login name of the author (or a comma separated list of multiple authors) and “3” is the number of posts to display. If you don’t specify an author or a display number, it will show the latest 5 posts from the author of the current page. If you want it to display the post excerpt as well, you can use the following code: <code>[latestbyauthor author="username" show="3" excerpt="true"]</code> This will only show exerpts that you have entered manually.
To call it from within a theme template, you have to wrap it in this PHP function: <code><?php echo do_shortcode('[latestbyauthor author="username" show="3"]'); ?></code>

Latest Posts by Author

Displays an unordered list of an author's latest posts.

ellbristow

Force all posts by users without Editor or higher role to be private.
This plugin allows you to give your post writers the ability to create and publish posts on your site that are only visible to 
the author, and to editors/admins, by forcing all their posts to be private.
Features:
<ul>
<li>Anyone who does not have the ‘edit_private_posts’ capability can only post private posts</li>
<li>Limit all posts, or only newly added posts</li>
<li>(Optional) Also force a post to have a specific category when posted</li>
<li>Editors, admins and Super admins (who do have the ‘edit_private_posts’) can see all posts, and switch them from private to public if required.</li>
<li>No Configuration!</li>
<li>Just Activate!</li>
</ul>
This is my first publicly released plugin… so I hope you like it. Let me know if you find any bugs!

ForcePrivate

Force all posts by users without Editor or higher role to be private

Latest Posts by Author vs ForcePrivate