Aaron Butacov

<a href="http://aahacreative.com/our-projects/wordpress-quick-save/" rel="nofollow ugc">WordPress Quick Save</a> adds a CTRL+S keyboard shortcut to trigger the Auto-save functionality in WordPress. If you find that you habitually hit CTRL+S while writing posts, this will stop those annoying popup save site windows from appearing.
No more having to stop and click save to ensure you don’t lose your recent edits. Keep in mind, this saves ONLY as an autosave.
This plugin should work with most versions of WordPress, but has not been tested in versions earlier than 2.9
<ul>
<li>Works in all major browsers.</li>
</ul>

WordPress Quick Save

Do you habitually press CTRL+S when writing? Do you fear missing posts? There's help!

Ole-Kenneth

WP Live Edit is WordPress plugin that enable the user to update the content, live, on the blog. Don’t waste time going back and forth between the admin panel and the site. Just update the content immediately while reading the blog post. The plugin is using WPs strict user control access before enabling this feature, so only the users allow to edit the blog post can do it.
This now works for both posts and pages.

WP Live Edit

WP Live Edit is Wordpress plugin that enable the user to update the content, live, on the blog.

WordPress Quick Save vs WP Live Edit