pressedsites

<a href="http://pressedsites.com/wordpress-save-hijack/" rel="nofollow ugc">WordPress Save Hijack</a> 
Adds a keyboard shortcut to trigger the Publish/Update functionality in WordPress posts.
This plugin should work with most versions of WordPress
<ul>
<li>Works in all major browsers. (on osx anyway please give feedback if find different on windows)</li>
</ul>

WordPress Save Hijack

Enables keyboard shortcuts for saving post edits (ie. cmd+s / ctrl+s)

jarednova

ClickToEdit will make your site ‘live’ to authors so they can edit titles and body copy. Additional functions mean you can make any piece of content: title, body or custom field, instantly editable. Great for tweaking copy or fixing errors on the fly.

Click to Edit

Requires at least:  3.0 Tested up to:       3.5 Once installed, titles and body copy can be easily tweaked by authors right on the live page instead  …

WordPress Save Hijack vs Click to Edit