Mindshare Labs, Inc.

jQuery Notify: a fast and easy way to display notifications on your website. Some possible uses:
<ul>
<li>Form validation (“Please fill out all of the fields.”)</li>
<li>A welcome message the first time someone visits your site.</li>
<li>Newsletter subscription form</li>
<li>Submission confirmation: (“Message sent. We’ll be in touch soon.”)</li>
<li>Breaking news, updates, special offers</li>
<li>Advertising</li>
</ul>
Try a <a href="http://jquery-notify.mindsharelabs.com/" rel="nofollow ugc">demo</a>.
<h4>Features:</h4>
<ul>
<li>Can be used on a per-page basis with a shortcode, or embedded directly into your template</li>
<li>Elegantly styled and animated in W3C valid HTML5 and CSS3, without any images</li>
<li>Animation speed and delay settings available from the shortcode</li>
<li>Comes with four styles: ‘default’ (blue), ‘error’ (red), ‘warning’ (orange), and ‘success’ (green)</li>
<li>
Supports unlimited user-created styles
We’ll be working to add new features as we think of them. Please comment in the forum if you have any 
feature requests.
</li>
</ul>

jQuery Notify

An attractive, lightweight, and highly configurable jQuery notification pane.

Alex King

Crowd Favorite

If you’ve decided to move things around on your site, you might overlook a few redirects and end up with some broken URLs. This will help you catch those so you can take care of them.

404 Notifier

Log 404 (file not found) errors on your site and get them delivered to you via e-mail or RSS.

jQuery Notify vs 404 Notifier