michitzky

On a page within the “Tools” Submenu, you’ll find a simple form which lets you choose the ingredients of a current Backup:
<ul>
<li>Uploads (either by scanning your Upload Directory, or by fetching Attachments from your Database)</li>
<li>Active Theme (and its parent theme, if used)</li>
<li>SQL-Dump containing the Mysql Database</li>
<li>A list of active Plugins</li>
</ul>
Backups will be stored within a folder in wp-content and be downloadable from the Backend. Once the downloads are finished, the backup files on the Server can be flushed.
What’s good:
<ul>
<li>Simple: Choose what is included in your Backup and download the resulting ZIP Archive from your Backend</li>
<li>Unobtrusive: It’s nested within the “Tools” submenu and comes without any bling bling, following default WP Backend Styles</li>
<li>Lightweight: 28KB zipped, 72KB unzipped</li>
</ul>
The plugin author does not take any responsibility for the safety of your data or the integrity of the generated backups.
Credits:
This plugin uses 2createStudio’s shuttle export Script for SQL Export: 
https://github.com/2createStudio/shuttle-export
Banner-Image on Repository: B. Walker, 11.08.2010: http://www.fotocommunity.de/pc/pc/display/22021026
Icons: FamFamFam Silk Icons: http://www.famfamfam.com/lab/icons/silk/

mk Simple Backups

It just does what is says. Quite light and easy to work with.
Thank you.



Nice plugin

Allows you to create simple backups on a dedicated page nested in the "Tools" Menu.

PiotrPress

Clearcode

The WordPress CC-Backup plugin allows you to create your sites database backup at any time and simply restore it with one click.
<h4>IMPORTANT</h4>
Copy <code>db.php</code> file from: <code>wp-content/cc-backup</code> directory, to: <code>wp-content</code> directory.

CC-Backup

This is a simple plugin to dump and restore the WordPress database.

mk Simple Backups vs CC-Backup