useStrict

Easily embed Calendly widgets onto your pages, with the ability to prefill the fields from the database or query strings. Prefilling is 
done via Javascript and Ajax, so it is caching-safe.
Use the configurator in the settings to generate the shortcode with all supported parameters.
Check out the <a href="https://usestrict.net/calendly-embedder-pro/?utm_source=readme&utm_medium=plugin&utm_campaign=promotion" title="UseStrict's Calendly Embedder Pro" rel="nofollow ugc">Pro version</a> for the following:
<ul>
<li>Save your shortcodes in a library for ease of use;</li>
<li>Embed using a Gutenberg block;</li>
<li>Embed using an Elementor widget;</li>
<li>Setting Google Analytics variables (Campaign, Source, Medium, Content and Term)</li>
<li>Tracking interaction such as
<ul>
<li>Profile page was viewed</li>
<li>Event type page was viewed</li>
<li>Invitee selected date and time</li>
<li>Invitee successfully booked a meeting</li>
</ul>
</li>
</ul>

UseStrict's Calendly Embedder

I wanted to install Calendly on my podcast site for approved guests to be able to book a time. I didn't want them to have to click a link to open a tab into my calendar. After trying a few different methods, I discovered this plugin. It was intuitive, the documentation was spot on, and in less than 3 minutes my calendar was displayed on my site.

Simple to Use and Works Perfectly

Simple but powerful embedding for Calendly.

Annovisio

AnnoVisio turns Calendly into a clear annual event calendar for WordPress.
Calendly is excellent for booking, but not for showing many events clearly across a whole year. AnnoVisio solves this by importing your Calendly event types and displaying them in a compact annual calendar on your WordPress site.
Ideal for:
<ul>
<li>Training providers</li>
<li>Retreat organizers</li>
<li>Workshop and seminar hosts</li>
<li>Schools and clubs</li>
<li>Venues and event spaces</li>
</ul>
Key features:
<ul>
<li>Import and sync Calendly event types</li>
<li>Display events in a clear annual calendar via shortcode</li>
<li>Support multi-day events</li>
<li>Let visitors open the Calendly booking flow directly from the calendar</li>
<li>Run manual syncs or optional automatic synchronization via WP-Cron</li>
</ul>
AnnoVisio is built for site owners who want to present bookable events in a much clearer way than with a standard Calendly embed.
<h3>External services</h3>
This plugin uses Calendly as an external service. Calendly is required to synchronize Calendly event types into WordPress, to check availability before opening a booking dialog, and to display Calendly’s booking popup on frontend pages that use the <code>[annovisio]</code> shortcode.
External services used:
<ul>
<li>Calendly service: https://calendly.com</li>
<li>Calendly API endpoint used by the plugin: https://api.calendly.com</li>
<li>Calendly frontend widget assets loaded by the shortcode: https://calendly.com/assets/external/widget.js and https://calendly.com/assets/external/widget.css</li>
</ul>
What is sent to Calendly and when:
<ul>
<li>During manual synchronization and WP-Cron automatic synchronization, the plugin sends authenticated server-side GET requests to <code>https://api.calendly.com</code> using the Calendly Personal Access Token configured by the site administrator in the WordPress admin area.</li>
<li>During synchronization, the plugin requests Calendly data from <code>/users/me</code> and <code>/event_types</code>. For availability checks, the plugin requests <code>/event_type_available_times</code>. Request parameters can include Calendly user URI, event type URI, <code>active</code>, <code>count</code>, start/end time values, and Calendly pagination URLs returned by previous API responses.</li>
<li>When a site visitor clicks an event rendered by the <code>[annovisio]</code> shortcode, the visitor’s browser first calls this plugin’s WordPress REST endpoint on the same WordPress site with the Calendly event type URI and either a selected date or a UTC slot start. The plugin then sends a server-side authenticated request to Calendly’s <code>/event_type_available_times</code> endpoint with the event type URI and the calculated start/end time window.</li>
<li>On frontend pages where the <code>[annovisio]</code> shortcode renders the calendar, the visitor’s browser loads Calendly’s widget JavaScript and CSS from <code>calendly.com</code> so Calendly’s booking popup can be displayed. Interactions inside the Calendly booking popup are handled by Calendly.</li>
</ul>
Calendly legal links:
<ul>
<li>Terms: https://calendly.com/legal/customer-terms-conditions</li>
<li>Privacy: https://calendly.com/legal/privacy-notice</li>
</ul>

Turn Calendly into a clear annual event calendar for WordPress — including multi-day events and direct booking links.

UseStrict's Calendly Embedder vs Annovisio