Dan Mossop

So you’ve written some WordPress plugins and now you want to let your readers know about them?
The WP Download Counts plugin lets you do just that. It adds a sidebar widget which retrieves a list of your plugins and displays them along with the current download count (updated every 15 mins) and a link to each plugin’s listing in the WordPress Plugin Directory.
Features include:
<ul>
<li>Minimal configuration required – just a title and your WordPress username </li>
<li>Plugins listed in order of the most-downloaded first.</li>
<li>Plugin information cached for 15 minutes to minimize overhead</li>
</ul>

WP Download Counts

Adds a widget which displays a list of your published plugins, with links and download count.

MMDeveloper

A wordpress widget that displays a product launch countdown.

WP Download Counts vs Product Launch Countdown Widget