bepayper

This plugin adds Payper capabilities in WordPress. 
It works for standard or custom posts, and it can be configured for any type of theme.

Payper widget

Allows to add Payper widget in a Wordpress site.

readwithacta

Monetize casual traffic without sacrificing subscriptions. Acta unlocks an additional revenue channel by embedding a seamless checkout directly inside your posts. Sell individual articles, or digital products such as playbooks, e-books, PDFs, video, podcasts, and more.
Learn more at <a href="https://readwithacta.com/" rel="nofollow ugc">readwithacta.com</a>.
Pay-per-post on your terms
<ul>
<li>You control the price – charge what each post is worth</li>
<li>One-click payments via cards, Apple Pay, and Google Pay – fully embedded and optimized for conversion</li>
<li>Revenue goes directly to your Stripe account</li>
</ul>
We win if you win
<ul>
<li>No setup fees or recurring costs – simple revenue-share model</li>
<li>Your customer, your data – get what you need to nurture the relationship</li>
<li>Localized currencies – sell content the way your audience expects</li>
</ul>
Easy setup
<ul>
<li>Install the plugin, set your price, connect your bank – you’re live</li>
<li>Works with any WordPress theme, including Jetpack-powered paywalls</li>
</ul>
What customers are saying
<ul>
<li>“Setting up and using Acta has been so easy, it took my reader’s experience to the next level.” – Sports Psychology Today</li>
<li>“People are purchasing specific topics of interest, which is exactly what we hoped.” – Rascal News</li>
<li>“Acta’s been working flawlessly with us. I can only recommend it.” – The G/O</li>
</ul>
<h3>External Services</h3>
<h4>Privacy</h4>
This plugin connects to external services to provide its functionality:
<ul>
<li>During setup, the plugin sends your site URL, email, name, and a locally generated secret key to the Acta API at https://api.readwithacta.com. No data beyond what you explicitly enter is transmitted.</li>
<li>On public-facing pages, the plugin loads a JavaScript file from https://api.readwithacta.com to render the checkout UI, and Stripe.js (https://js.stripe.com/v3/) for secure payment processing.</li>
<li><a href="https://readwithacta.com/terms" rel="nofollow ugc">Acta Terms of Service</a> | <a href="https://readwithacta.com/privacy" rel="nofollow ugc">Acta Privacy Policy</a></li>
<li><a href="https://stripe.com/legal" rel="nofollow ugc">Stripe Terms of Service</a> | <a href="https://stripe.com/privacy" rel="nofollow ugc">Stripe Privacy Policy</a></li>
</ul>

Acta — Pay Per Article

A pay-per-post solution for WordPress publishers. Give casual visitors a simple way to pay for content, no subscription required.

Payper widget vs Acta — Pay Per Article