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.

Joey Kudish

This developer-oriented WordPress plugin extends Log Deprecated Notices to show a link in the WP 3.3+ Toolbar. Based on <a href="http://nacin.com" rel="nofollow ugc">Andrew Nacin</a>‘s <a href="https://wordpress.org/extend/plugins/log-deprecated-notices/" rel="ugc">Log Deprecated Notices</a>
This plugin is built and maintained by <a href="http://jkudish.com" title="Joachim Kudish" rel="nofollow ugc">Joachim Kudish</a>.
Follow development, fork and contribute on <a href="https://github.com/jkudish/LogDeprecatedNoticesExtender" rel="nofollow ugc">github</a>

Log Deprecated Notices Extender

This developer-oriented WordPress plugin extends Andrew Nacin's Log Deprecated Notices to show a link in the WP 3.3+ Toolbar.

PayPal API Subscriptions vs Log Deprecated Notices Extender