oneeurolabs

<p>OneEuroLabs License Key Manager is a <strong>free, fully functional</strong> license key management plugin for WordPress. Issue, validate, and manage license keys for your software products.</p>
<p><strong>External services used:</strong><br />
* <strong>Stripe</strong> – Payment processing. <a href="https://stripe.com/legal" rel="nofollow ugc">Terms</a> | <a href="https://stripe.com/privacy" rel="nofollow ugc">Privacy</a><br />
* <strong>PayPal</strong> – Payment processing. <a href="https://www.paypal.com/us/legalhub/useragreement-full" rel="nofollow ugc">Terms</a> | <a href="https://www.paypal.com/us/webapps/mpp/ua/privacy-full" rel="nofollow ugc">Privacy</a></p>
<p>Data sent: payment event data from Stripe/PayPal to this plugin via webhook. No personal data is sent from this plugin to external services.</p>
<p><strong>LicenseHub</strong> is the easiest way to sell and manage software license keys directly from WordPress. Connect your payment provider, and license keys are generated and delivered automatically by email.</p>
<h4>Free Version</h4>
<ul>
<li>Generate & manage license keys (up to 50)</li>
<li>REST API: validate, activate, deactivate</li>
<li>Admin dashboard with live stats</li>
<li>Automatic license email delivery</li>
<li>1 payment provider: Stripe <strong>or</strong> PayPal</li>
<li>Webhook log</li>
</ul>
<h4>Pro Version – from €149/year</h4>
<ul>
<li><strong>Unlimited licenses</strong></li>
<li><strong>8 payment providers</strong>: Stripe, PayPal, Paddle, LemonSqueezy, WooCommerce, EDD, Gumroad, Mollie</li>
<li>Demo license system (24h trial, countdown starts on first activation)</li>
<li>Expiry reminder emails (7 days before)</li>
<li>CSV export & reports</li>
<li>Custom external database (MySQL/MariaDB)</li>
<li>Multi-site shared database</li>
<li>White-label email templates</li>
<li>Priority support</li>
</ul>
<h4>REST API</h4>
<ul>
<li><code>POST /wp-json/licensehub/v1/validate</code></li>
<li><code>POST /wp-json/licensehub/v1/activate</code></li>
<li><code>POST /wp-json/licensehub/v1/deactivate</code></li>
<li><code>GET  /wp-json/licensehub/v1/plans</code></li>
<li><code>POST /wp-json/licensehub/v1/resend</code></li>
<li><code>POST /wp-json/licensehub/v1/webhook/stripe</code></li>
<li><code>POST /wp-json/licensehub/v1/webhook/paypal</code></li>
</ul>
<h4>License Key Format</h4>
<p>Keys are generated in the format <code>LH-XXXX-XXXX-XXXX-XXXX</code> using cryptographically secure random characters.</p>
<h3>Privacy Policy</h3>
<p>This plugin contacts <code>oneeurolabs.com</code> only when a Pro license key is entered in Settings. No data is sent without the administrator explicitly entering a key. Data sent: license key, email, anonymised site ID.</p>
<h3>External Services</h3>
<p>This plugin optionally connects to the following third-party services when configured by the site administrator. No data is transmitted unless the respective payment provider is enabled in the plugin settings.</p>
<h4>Stripe</h4>
<p>When Stripe is selected as the payment provider, this plugin sends an API request to the Stripe API to test connectivity (admin settings only). It also receives webhook events from Stripe at the registered webhook endpoint to create and manage license keys automatically.</p>
<ul>
<li>Data sent: Stripe API key (for connection test only, initiated manually by admin)</li>
<li>Data received: Payment and subscription events via webhook</li>
<li>When: Only when Stripe is configured and a payment event occurs</li>
<li>Stripe Terms of Service: https://stripe.com/terms</li>
<li>Stripe Privacy Policy: https://stripe.com/privacy</li>
</ul>
<h4>PayPal</h4>
<p>When PayPal is selected as the payment provider, this plugin sends an API request to the PayPal API to obtain an OAuth token for connection testing (admin settings only). It also receives webhook events from PayPal at the registered webhook endpoint.</p>
<ul>
<li>Data sent: PayPal Client ID and Secret (for connection test only, initiated manually by admin)</li>
<li>Data received: Payment and subscription events via webhook</li>
<li>When: Only when PayPal is configured and a payment event occurs</li>
<li>PayPal Terms of Service: https://www.paypal.com/us/legalhub/useragreement-full</li>
<li>PayPal Privacy Policy: https://www.paypal.com/us/legalhub/privacy-full</li>
</ul>


OneEuroLabs License Key Manager

Universal License Manager for WordPress. Generate, validate and manage software license keys. Supports Stripe or PayPal. Free for up to 50 licenses.

codulon

<p>Codulon Serial Manager Lite lets store owners create and manage manual license keys directly inside WordPress.</p>
<p>This free plugin focuses on manual key management, customer lookup by shortcode, and a basic REST validation endpoint.</p>
<h4>Lite includes</h4>
<ul>
<li>Manual license-key creation.</li>
<li>Automatic serial generation from the manual form.</li>
<li>License status management: active, suspended, and expired.</li>
<li>Searchable admin table.</li>
<li>Copy-to-clipboard serial buttons.</li>
<li>Basic customer shortcode: <code>[codulon_serial_keys_lite]</code>.</li>
<li>Working validation API for locally created serials.</li>
<li>First-activation binding to <code>hardwareId</code>.</li>
<li>Hardware ID mismatch protection for locally created serials.</li>
</ul>
<h4>Pro adds</h4>
<ul>
<li>WooCommerce order automation.</li>
<li>Automatic serial generation when orders are paid.</li>
<li>Product-level “Issue serial/license key” settings.</li>
<li>Product and variation license settings.</li>
<li>Perpetual license keys.</li>
<li>Time-limited license keys.</li>
<li>One-time evaluation licenses.</li>
<li>Paid upgrade targets for evaluation products.</li>
<li>Duplicate evaluation blocking by customer, website, or device.</li>
<li>Advanced manual serial entry with product and variation defaults.</li>
<li>Manual expiry/subscription controls.</li>
<li>Advanced status, sorting, filtering, and operational views.</li>
<li>Serial suspension, unsuspension, expiry, and revoke workflows.</li>
<li>Serial history logs.</li>
<li>Resend serial delivery emails.</li>
<li>CSV import.</li>
<li>CSV export.</li>
<li>Customer account delivery.</li>
<li>Customer serial status, expiry, activation, download, and evaluation-expiry details.</li>
<li>License PDF downloads.</li>
<li>Purchased file download links in account and email views.</li>
<li>Branded serial emails.</li>
<li>Order confirmation template.</li>
<li>Invoice / order-details payment template.</li>
<li>Renewal payment request template.</li>
<li>Trial-ending reminder template.</li>
<li>Expiry reminder emails.</li>
<li>Expired/revoked license notice emails.</li>
<li>Packing list and order item email sections.</li>
<li>Email template editor.</li>
<li>Test/sample email sending.</li>
<li>Restore default email templates.</li>
<li>Copy header/footer regions between templates.</li>
<li>Email-safe header logo/image sizing.</li>
<li>Email tokens for serials, renewal choices, order items, totals, VAT notes, customer data, store data, and downloads.</li>
<li>VAT note and tax/totals integration.</li>
<li>Store contact, footer link, and address tokens.</li>
<li>Email and shop theme settings.</li>
<li>Preset themes and color controls.</li>
<li>WooCommerce storefront styling for shop, cart, checkout, order, payment, and account pages.</li>
<li>Product images in email rows.</li>
<li>Subscriptions, renewals, and evaluation upgrades.</li>
<li>Renewal order generation.</li>
<li>Multi-license renewal selection page.</li>
<li>Early renewal extension handling.</li>
<li>Unpaid renewal handling.</li>
<li>Scheduled renewal and expiry sweeps.</li>
<li>Activation API checks.</li>
<li>Website/plugin activation binding.</li>
<li>Desktop app hardware ID hash support.</li>
<li>Activation mismatch protection.</li>
<li>Expired, suspended, revoked, and duplicate API responses.</li>
<li>API rate limiting.</li>
<li>API settings and integration guidance.</li>
<li>PDF, CSV, import, export, and operational tools.</li>
<li>Automatic revoke on cancelled, failed, or refunded WooCommerce orders.</li>
<li>Revoked and unpaid-revoked customer email handling.</li>
<li>Virtual license order processing support.</li>
<li>Built-in manual and documentation page.</li>
<li>Update delivery tools for the separate full version.</li>
</ul>
<p>Buy the full version:<br />
https://codulon.com/shop</p>
<h4>API reference</h4>
<p>This plugin includes a working serial validation API for locally created serials:</p>
<pre><code>POST https://yourdomain.com/wp-json/wc-custom/v1/validate-serial
</code></pre>
<p>Required fields:</p>
<ul>
<li><code>serial</code> – the license key shown to the customer.</li>
<li><code>hardwareId</code> – one stable activation identity.</li>
</ul>
<p>For websites, WordPress plugins, or PHP apps, use the canonical site URL as <code>hardwareId</code>.</p>
<p>For desktop software, use a stable hashed device ID as <code>hardwareId</code>. Do not send raw hardware serial numbers.</p>
<p>Example JSON request:</p>
<pre><code>{
  "serial": "ABCD-EFGH-IJKL-MNOP",
  "hardwareId": "https://example-client-site.com"
}
</code></pre>
<p>Example success response:</p>
<pre><code>{
  "valid": "True",
  "message": "Serial validated and hardware ID activated.",
  "email": "customer@example.com",
  "last_name": "Customer"
}
</code></pre>
<p>Common failed responses use <code>"valid": "False"</code> with a <code>message</code>, for example serial not found, hardware ID mismatch, expired, suspended, or rate limited.</p>
<p>Important: this plugin validates serials created inside Codulon Serial Manager Lite. The separate full version uses the same endpoint path but validates WooCommerce serials, subscriptions, renewals, revoked access, customer order data, and advanced license rules.</p>


Codulon Serial Manager Lite


Try the PRO plugin. In one word: Fantastic!


Great UI.

A lightweight tool for manual license-key management, including a working validation API.

OneEuroLabs License Key Manager vs Codulon Serial Manager Lite