Alex Mills

Now you too can show the <a href="https://wordpress.org/download/counter/" rel="ugc">WordPress download counter</a> on your website! This plugin adds a widget to your blog that shows the current download count and even refreshes the count every 15 seconds automatically.
Requirements
<ul>
<li>PHP 5.2.0 or newer (PHP4 is dead anyway)</li>
<li>WordPress 2.8 or newer</li>
</ul>

WordPress Download Counter

Allows you to show the download counter for WordPress on your site.

oplugins

wpdevelop

Secure Downloads plugin generate secure download links for protected files and can send emails to your clients for downloading. 
Links can expire after a predefined time, and you can set IP lock for specific download. Download links does not show real location of files at your server. 
You can track every download of files by receiving email about file download with detailed info about download.
<blockquote>
<a href="https://oplugins.com/plugins/secure-downloads/" title="Secure Downloads Homepage" rel="nofollow ugc">Plugin Homepage</a> | <a href="https://oplugins.com/plugins/secure-downloads/#support" title="Support" rel="nofollow ugc">Support</a>
</blockquote>
<h4>FEATURES</h4>
<ul>
<li>Securely distribute your files and track every download.</li>
<li>Upload your files via familiar WP interface.</li>
<li>Define Title, Description and Version Number at “Attachment details” for your protected files</li>
<li>Plugin upload files into secure, protected folder. Website visitors will not have direct access to such files.</li>
<li>Generate secure links to your protected files, which does not show real location of file.</li>
<li>Links can expire after specific time.</li>
<li>Links can be locked to specific IP or IP mask (network).</li>
<li>Configure email template with different parameters.</li>
<li>Send emails to your customers with secure links for download your protected files.</li>
<li>Monitor downloading of each file, by receiving email notification about file download with detailed info about download.</li>
<li>Fast configure your protected files via CSV form. Useful for saving or editing list of files in one form.</li>
<li>Easy reorder list of files via drag and drop interface.</li>
<li>Configure URLs for pages with warning, like “link expired notice”.</li>
<li>Mobile friendly.</li>
</ul>
<h4>SECURE DOWNLOADS IS GREAT FOR</h4>
<ul>
<li>Distribute you files after purchase</li>
<li>Delivery updates of your products to your customers</li>
</ul>

Secure Downloads

Easy generate and distribute secure links for file downloads, that can expire, and track every download.

WordPress Download Counter vs Secure Downloads