zackdesign

This plugin is deprecated and should not be used for new installations.
PayPal API Subscriptions was built in 2008 using the PayPal NVP (Name-Value Pair) API v52.0, which PayPal has since discontinued in favour of their REST APIs. The plugin also directly handles raw credit card numbers on your server, which creates PCI compliance obligations that most WordPress sites cannot meet.
Recommended alternatives:
<ul>
<li><a href="https://woocommerce.com/products/woocommerce-paypal-payments/" rel="nofollow ugc">WooCommerce + PayPal Payments</a> — modern PayPal integration with Smart Buttons (card data never touches your server)</li>
<li><a href="https://www.memberpress.com/" rel="nofollow ugc">MemberPress</a> — full membership/subscription management with PayPal and Stripe</li>
<li><a href="https://www.paidmembershipspro.com/" rel="nofollow ugc">Paid Memberships Pro</a> — free membership plugin with PayPal support</li>
</ul>
What happens in v1.2.0:
<ul>
<li>Existing <code>[ppsa]</code> shortcodes display a retirement message instead of subscription buttons</li>
<li>An admin notice reminds you to migrate</li>
<li>All PayPal API code, the credit card form, and bundled jQuery have been removed</li>
</ul>

PayPal API Subscriptions

DEPRECATED — This plugin uses the discontinued PayPal NVP API and handles raw credit card data. Please switch to a modern alternative.

Espi

Removes common deprecated and problematic tags and attributes that the WordPress editor will add automatically.
Original Code pulled and from a plugin ericjuden had written. modified by Josh Espinoza
This plugin will strip out the following tags:
<pre><code>rel=""
target=""
br /
br/
BR/
br
br
b
/b
non breaking space
Empty Headings 1 - 6
iframes
mailto:
</code></pre>
Installation
<ul>
<li>Copy the plugin files to <code>wp-content/plugins/</code></li>
<li>Activate Plugin from the plugins page</li>
</ul>
Changelog
1.6 
* added mailto: anchors, and iframes to the filtering out list 
 1.5 
* prepped for wordpress svn system 
 1.3 
* added additional tags to be removed 
 1.2 
* Initial release

PCSD Tag Stripper

Removes common deprecated and problematic tags and attributes that the Wordpress editor will add automatically. Original Code pulled and from a plugi …

PayPal API Subscriptions vs PCSD Tag Stripper