slashbooking

SlashBooking turns any WordPress page into a self-service appointment funnel. A visitor picks a service, sees the available slots in real time, and books in under a minute. You receive an email alert and confirm or decline in one click — no need to log in to WordPress, no third-party SaaS, no recurring fees.
It is a self-hosted scheduling tool: your data stays in your WordPress database.
<h4>Main features</h4>
<ul>
<li>Public booking form via shortcode — A single <code>[slashbooking]</code> in any page. Multiple services, date picker, real-time slots, customer form, fully responsive.</li>
<li>One-click email confirmation — Every request arrives with two buttons, Confirm and Decline. No WordPress login required. The action links are signed with HMAC-SHA256 and cannot be forged.</li>
<li>Smart buffers around appointments — Configure padding (travel, prep) between appointments. Applied automatically.</li>
<li>Multi-slot opening hours — Monday 9–12 + 14–18, Tuesday morning only, Wednesday off… Each day and each service is configured independently.</li>
<li>Transactional emails with .ics — Confirmation, decline and acknowledgement emails, each with an automatic <code>.ics</code> attachment so the customer adds the appointment to their calendar in one click.</li>
<li>Built-in GDPR compliance — Explicit consent before submission, WP_Privacy exporters/erasers, configurable retention, automatic anonymisation.</li>
<li>Built-in anti-spam — Honeypot and per-IP rate limiting, with no third-party service and no external request.</li>
</ul>
<h4>Who it is for</h4>
<ul>
<li>Freelancers and small businesses who want a self-hosted scheduling page</li>
<li>Agencies packaging a website with a booking funnel</li>
<li>Any business where “book a slot” opens the customer journey</li>
</ul>
<h3>External services</h3>
This plugin is fully self-contained. It makes no calls to any external or third-party service and sends no data off your site — every request is handled on your own WordPress installation.
<h3>Source code and build</h3>
The full, human-readable source code is public and maintained at:
https://github.com/ArchSeraphin/slashbooking-lite
The PHP runs unmodified from <code>src/</code>. The admin interface bundle 
(<code>assets/dist/index.jsx.js</code> and <code>.css</code>) is compiled from the React/SCSS sources 
in <code>src/Admin/react-app/src/</code>, which ship inside the plugin ZIP as well.
To regenerate the compiled admin assets:
<pre><code>npm install
npm run build (uses @wordpress/scripts — webpack/Babel; outputs to assets/dist/)
</code></pre>
The Composer autoloader in <code>vendor/</code> is generated with <code>composer install --no-dev</code>.

SlashBooking

Self-hosted online appointment booking for WordPress: a real-time public calendar via shortcode, with one-click email confirmation.

formitable

Formitable is an online table management system for restaurants. Our tools enable restaurants to improve their business by gathering user feedback, promote their own events, counter no shows through prepaid reservations and grow their guest database with valuable information.
This plugin adds the Formitable SDK to your website and enables you to add the Formitable booking widget and customize it directly from your settings. 
Please note that the Formitable SDK is a JavaScript-file hosted externally at https://cdn.formitable.com.

Formitable Development Kit

Tools for integrating Formitable to your website.

SlashBooking vs Formitable Development Kit