You can press CTRL+S in ANY browser to save the work you’re working with, including posts and pages.
Some features:
<ul>
<li>Saves your current work by pressing CTRL+S</li>
<li>Works in all browsers (thanks <a href="http://www.openjs.com/" title="Open JS" rel="nofollow ugc">Binny V A</a>)</li>
<li>No jQuery</li>
<li>Made in Sweden</li>
</ul>

The Saver

This plugins allows you to publish your posts/pages and update your files in the admin panel by pressing CTRL+S.

Kyle Theisen

Dashy gives you a search field to get to admin pages quicker. More keyboard shortcuts right inside of WordPress. Get to pages, post, plugins, custom post types, faster. You can even search and get a to single post with the keyboard. To activate, use Control+Space.
To get to a specific page, type “list” and choose “List Pages”. From there you will be showing all of your pages that you can edit. Start searching the page name, and hit enter to go directly to editing that page. This supports posts, pages, and custom post types.

Dashy

Dashy gives you a search field to get to admin pages quicker.

The Saver vs Dashy