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)

mariodabek

Simple Update is the perfect plugin for any WordPress user that needs an easier way to update content on a post or page without having to search through the text and HTML.
With this plugin you can easily create shortcuts for headers, sub-headers, paragraphs, quotes, stats, and more.
The Simple Update plugin is perfect for: Bloggers, writers, journalists, and reporters Marketers, content managers, and content creators Website owners
On your post or page highlight your headers, sub-headers, and any other text you may need to update in the future. Next, click on the “Simple Update” button in your WordPress Editor Toolbar. You’ll be asked to give your shortcut a name and once you do, the simple-to-update shortcut will appear below your WordPress Editor. When you need to update a piece of your content, simply update the Simple Update field that’s created at the bottom of your Editor.

Simple Update

The simplest way to update content between a mess of HTML. Create quick shortcuts for content editing.

WordPress Save Hijack vs Simple Update