zackdesign

Paypal API Subscriptions is designed to allow your users to register on your blog and subscribe all at once. 
The Paypal API keeps them on your blog and means that you simply have to skin the WordPress Admin to suit your 
site theme. Because it is fully integrated with WordPress you can keep track of your users easily and effectively.
This plugin defaults to the Paypal Sandbox for test results so you can test it for yourself.
You really need SSL before you can begin to think of using it for real. Download Admin SSL here: <a href="http://www.kerrins.co.uk/blog/admin-ssl/" title="Admin SSL" rel="nofollow ugc">Admin SSL</a>.
It’s important to realise that you won’t be able to test Express Checkout until you use your own developer API credentials.
Features:
<ul>
<li>Subscription button shortcode tags for your posts</li>
<li>Use your Paypal API credentials</li>
<li>Integrates with WordPress registration seamlessly</li>
<li>Use a WordPress Admin Theme to make the user transition completely transparent!</li>
<li>Adheres to all Paypal Guidelines and Requirements</li>
<li>Uses WordPress-supplied error checking in the registration form for both transactions and fields! This means no registered users by accident.</li>
<li>WordPress-MU compatibility!</li>
<li>Automatically tests using the Sandbox SDK credentials </li>
</ul>
List of possible future features:
<ul>
<li>Ability to cancel subscriptions directly inside WordPress</li>
<li>Further Paypal Profile changes</li>
<li>Additional subscription stuff like initial payment and trials </li>
</ul>
Need help? Contact me at <a href="http://www.zackdesign.biz" title="Zack Design" rel="nofollow ugc">Zack Design</a>.
Please be aware that I’ll only be updating this if I need to or if I’m paid to. Feel free to come on board and contribute!
<h3>Latest Changes</h3>
1.0
<ul>
<li>First release!</li>
</ul>

PayPal API Subscriptions

Provides an all-in-one registration point for subscribers to your blog. Uses Paypal API and recurring billing.

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SubscriptionFlow Add-On for Paywall is a powerful tool for managing content access restrictions based on user subscriptions. It provides an easy way to restrict access to articles, categories, tags, custom post types, and multimedia content such as PDFs, videos, and audio files.
Use this plugin to create customers, set paywall conditions, and control access to premium content using the SubscriptionFlow platform.
<h4>What is SubscriptionFlow</h4>
SubscriptionFlow is an all-inclusive subscription management software, powered by recurring billing & payment processing, pipeline management, customer churn reduction, and retention and revenue management tools, ensures unified, targeted, and automated subscription operations and draws revenue and happy customers, altogether.
<ul>
<li>Curate, Customize and Automate Subscription Lifecycles <a href="https://www.subscriptionflow.com/subscription-management-software/" rel="nofollow ugc">Read more</a></li>
<li>Streamline Billing and Payment Processes with Automation <a href="https://www.subscriptionflow.com/recurring-billing-software/" rel="nofollow ugc">Read more</a></li>
<li>Multiply conversions with trial management solutions <a href="https://www.subscriptionflow.com/trial-management-system/" rel="nofollow ugc">Read more</a></li>
<li>Pre-plan mitigation, limit churn, even retention & revenue <a href="https://www.subscriptionflow.com/churn-management-software/" rel="nofollow ugc">Read more</a></li>
<li>Integrate Third-party Applications in One Platform <a href="https://www.subscriptionflow.com/integrations/" rel="nofollow ugc">Read more</a></li>
<li>Monitor Real-Time Analytics and Marketing Insights <a href="https://www.subscriptionflow.com/subscription-analytics-reporting/" rel="nofollow ugc">Read more</a></li>
</ul>
Features: 
* Restrict content including articles, categories/tags, custom post types, PDFs, videos, and audio files. 
* Customizable paywall settings for content restriction. 
* Manage customer emails and settings directly within the plugin. 
* Customize the restricted content message shown to non-subscribers. 
* Add restriction conditions for any single WordPress user. 
* Restrict content areas of a page or post using shortcodes. 
* Support for payment gateways: Stripe, Authorize.net, PayPal, Braintree, and more.
<h3>External services</h3>
The plugin uses the SubscriptionFlow API to enable paywalls on WordPress blog posts, helping to manage subscriptions and restricted content efficiently.

SubscriptionFlow Add-On for Paywall

SubscriptionFlow Add-On for Paywall is a powerful tool for managing content access restrictions based on user subscriptions.

PayPal API Subscriptions vs SubscriptionFlow Add-On for Paywall