agenticdaisy

WebCalendar gives your WordPress site a clean, responsive calendar with the features you actually need — recurring events, iCal import, remote sync, email reminders, and fine-grained permissions — without the complexity.
Calendar Views & Display
<ul>
<li>Month, week, and day views with smooth AJAX navigation — no page reloads</li>
<li>Responsive design that adapts to any theme and screen size</li>
<li>Color-coded categories for visual organization</li>
<li>Gutenberg blocks (Calendar + Upcoming Events) and <code>[webcalendar]</code> shortcode</li>
</ul>
Event Management
<ul>
<li>Recurring events — daily, weekly, monthly, and yearly patterns with RRULE support</li>
<li>Edit a single instance or the entire series</li>
<li>File attachments via the WordPress Media Library</li>
<li>Conflict detection warns you about overlapping events</li>
<li>Public, Private, and Confidential visibility levels</li>
</ul>
Import, Export & Sync
<ul>
<li>Import <code>.ics</code> files from Google Calendar, Outlook, Apple Calendar, or any iCal source</li>
<li>Export your calendar in iCalendar format</li>
<li>Subscribe to remote iCal feeds with automatic hourly sync</li>
<li>Import public holidays for any country</li>
</ul>
Collaboration & Permissions
<ul>
<li>Invite WordPress users to events with email notifications</li>
<li>Event reminders via WP-Cron</li>
<li>36 granular capabilities mapped to WordPress roles — control who can view, create, edit, and manage events</li>
</ul>
SEO & Sharing
<ul>
<li>Single event pages with SEO-friendly permalinks</li>
<li>Schema.org Event JSON-LD, Open Graph, and Twitter Card meta tags</li>
<li>Social share buttons and “Add to Google/Outlook/Yahoo” one-click buttons</li>
</ul>
For Developers
<ul>
<li>Full REST API for events, categories, holidays, and remote calendars</li>
<li>Built on Clean Architecture with <code>webcalendar-core</code> business logic library</li>
<li>PSR-4 autoloading, PHPStan Level 9, 1100+ automated tests</li>
<li>All calendar data in dedicated <code>webcal_*</code> tables — no Custom Post Types</li>
</ul>
Want Even More?
<a href="https://agenticdaisy.com/webcalendar/" rel="nofollow ugc">WebCalendar Pro</a> is a separate premium plugin that adds:
<ul>
<li>Appointment Booking — public scheduling with availability management</li>
<li>Google & Outlook Sync — two-way OAuth synchronization</li>
<li>Multisite Network Support — shared calendars across a WordPress network</li>
<li>White-Labeling — remove all WebCalendar branding</li>
<li>Priority Support — 24-hour response time SLA</li>
</ul>
The free version you’re using right now is fully functional with zero locked features. Pro adds capabilities that aren’t included here.
Technical Note: Database Architecture
This plugin integrates <code>webcalendar-core</code>, a framework-agnostic Composer library that provides all calendar business logic (events, recurrence, iCal, permissions) through 17 repository classes. These repositories require PDO and use exclusively parameterized prepared statements — no raw SQL concatenation. WordPress-specific data (users, options, capabilities) is accessed via <code>$wpdb</code> through the plugin’s Bridge layer (<code>WpUserRepository</code>, <code>WpConfigRepository</code>, etc.). See <code>src/Bridge/PdoFactory.php</code> for the connection factory.
<h3>External Services</h3>
This plugin connects to the following third-party services:
<h4>Nager.Date API</h4>
Used for importing public holidays via WebCalendar > Holidays. 
* Endpoint: https://date.nager.at/api/v3/ 
* <a href="https://date.nager.at/LegalNotice" rel="nofollow ugc">Terms of Use</a> 
* <a href="https://date.nager.at/Privacy" rel="nofollow ugc">Privacy Policy</a>
<h4>Google Calendar Public Feeds</h4>
Alternative holiday source. Fetches public .ics files from Google. 
* Endpoint: https://calendar.google.com/calendar/ical/ 
* <a href="https://policies.google.com/privacy" rel="nofollow ugc">Google Privacy Policy</a> 
* <a href="https://policies.google.com/terms" rel="nofollow ugc">Google Terms of Service</a>
<h4>Thunderbird Holiday Calendars</h4>
Alternative holiday source via community-maintained .ics files. 
* Endpoint: https://www.thunderbird.net/media/caldata/ 
* <a href="https://www.mozilla.org/about/legal/terms/mozilla/" rel="nofollow ugc">Mozilla Terms of Use</a> 
* <a href="https://www.mozilla.org/privacy/" rel="nofollow ugc">Mozilla Privacy Policy</a>
<h4>Remote Calendar Sync (User-Configured)</h4>
When remote iCal subscriptions are configured, the plugin fetches .ics data from 
those URLs via HTTP GET. No user data is transmitted to these services.
<h4>OpenStreetMap / Nominatim</h4>
When a single event page has a location and the map provider is set to OpenStreetMap 
(the default), the plugin geocodes the address via the Nominatim API and displays a 
map using OpenStreetMap tile servers. The event location string is sent as a search 
query. No user personal data is transmitted. 
* Geocoding endpoint: https://nominatim.openstreetmap.org/search 
* Tile server: https://tile.openstreetmap.org/ 
* <a href="https://wiki.osmfoundation.org/wiki/Terms_of_Use" rel="nofollow ugc">OpenStreetMap Terms of Use</a> 
* <a href="https://operations.osmfoundation.org/policies/nominatim/" rel="nofollow ugc">Nominatim Usage Policy</a> 
* <a href="https://wiki.osmfoundation.org/wiki/Privacy_Policy" rel="nofollow ugc">OpenStreetMap Privacy Policy</a>
<h4>Google Maps Embed API</h4>
When the map provider is set to Google Maps in settings, single event pages display 
an embedded Google Map for the event location. The event location string and your 
Google Maps API key are sent to Google. No other user data is transmitted. 
* Endpoint: https://www.google.com/maps/embed/v1/place 
* <a href="https://cloud.google.com/maps-platform/terms" rel="nofollow ugc">Google Maps Platform Terms of Service</a> 
* <a href="https://policies.google.com/privacy" rel="nofollow ugc">Google Privacy Policy</a>
<h4>Add to Calendar Links</h4>
Single event pages include “Add to Calendar” buttons that generate links to Google 
Calendar, Outlook.com, and Yahoo Calendar. When a visitor clicks a button, the event 
title, date, time, location, and description are passed as URL parameters to the 
chosen service. No data is sent until the visitor clicks. 
* Google Calendar: https://www.google.com/calendar/render — <a href="https://policies.google.com/terms" rel="nofollow ugc">Terms</a> | <a href="https://policies.google.com/privacy" rel="nofollow ugc">Privacy</a> 
* Outlook.com: https://outlook.live.com/calendar/0/action/compose — <a href="https://www.microsoft.com/servicesagreement" rel="nofollow ugc">Terms</a> | <a href="https://privacy.microsoft.com/privacystatement" rel="nofollow ugc">Privacy</a> 
* Yahoo Calendar: https://calendar.yahoo.com/ — <a href="https://legal.yahoo.com/us/en/yahoo/terms/otos/index.html" rel="nofollow ugc">Terms</a> | <a href="https://legal.yahoo.com/us/en/yahoo/privacy/index.html" rel="nofollow ugc">Privacy</a>
<h4>Social Sharing Links</h4>
Single event pages include social sharing buttons for Facebook, X (Twitter), and 
LinkedIn. When a visitor clicks a button, the event page URL and title are passed as 
URL parameters to the chosen service. No data is sent until the visitor clicks. 
* Facebook: https://www.facebook.com/sharer/sharer.php — <a href="https://www.facebook.com/terms.php" rel="nofollow ugc">Terms</a> | <a href="https://www.facebook.com/privacy/policy/" rel="nofollow ugc">Privacy</a> 
* X (Twitter): https://x.com/intent/tweet — <a href="https://x.com/tos" rel="nofollow ugc">Terms</a> | <a href="https://x.com/privacy" rel="nofollow ugc">Privacy</a> 
* LinkedIn: https://www.linkedin.com/sharing/share-offsite/ — <a href="https://www.linkedin.com/legal/user-agreement" rel="nofollow ugc">Terms</a> | <a href="https://www.linkedin.com/legal/privacy-policy" rel="nofollow ugc">Privacy</a>
<h3>Development & Source Code</h3>
Full unminified source for this plugin is included in this distribution under GPL-2.0-or-later — you do not need to download anything external to rebuild the compiled assets.
What ships in this zip:
<ul>
<li><code>src/</code> — unminified React/JSX source for all admin components, frontend calendar, and the mini-calendar widget</li>
<li><code>build/</code> — the pre-compiled minified bundles (what the plugin actually loads at runtime)</li>
<li><code>package.json</code> + <code>package-lock.json</code> — Node build manifest and lockfile for reproducible <code>npm install</code></li>
<li><code>composer.json</code> — PHP dependency manifest</li>
</ul>
Rebuilding the compiled assets from source:
Prerequisites: PHP 8.2 or higher with Composer 2, Node.js 20 or higher with npm 10.
<ol>
<li><code>composer install</code> — install PHP dependencies</li>
<li><code>npm install</code> — install JavaScript build dependencies (@wordpress/scripts, React, Toast UI Calendar, Leaflet, Tiptap)</li>
<li><code>npm run build</code> — compile <code>src/index.js</code> and <code>src/frontend.js</code> into the minified bundles under <code>build/</code></li>
</ol>
The compiled output in <code>build/</code> is byte-reproducible from the matching <code>src/</code> at the same version using this toolchain.

WebCalendar

A modern calendar plugin with recurring events, iCal import/export, remote calendar sync, Gutenberg blocks, and access control.

bramwaas

Simple block or widget to display events from a public google calendar, microsoft office outlook calendar or an other iCal file, in the style of your website.
The Gutenberg block requires at least WordPress 5.9. 
This simple block/widget fetches events from a public google calendar (or other calendar in iCal format) and displays them in simple list allowing you to fully adapt to your website by applying all kinds of CSS. 
Google offers some HTML snippets to embed your public Google Calendar into your website. 
These are great, but as soon as you want to make a few adjustments to the styling, that goes beyond changing some colors, they’re not enough.
<h3>Plugin Features</h3>
<ul>
<li>Calendar block or widget to display appointments/events of a public Google calendar or other iCal file.</li>
<li>Block gives live preview in the editor and is not constrained to widget area. Old widget will be displayed in legacy widget block only in widget area. Old widget works also with Elementor (with some limitations e.g. preview in backend editor is not always available).</li>
<li>Small footprint, uses only Google ID of the calendar, or ICS link for Outlook, or Url of iCal file, to get event information via iCal</li>
<li>Merge more calendars into one block</li>
<li>Manage events in Google Calendar, or other iCalendar source.</li>
<li>Fully adaptable to your website with CSS. Output in unordered list with Bootstrap 4 listgroup classes and toggle for details.</li>
<li>Choose date / time format in settings screen that best suits your website.</li>
<li>Displays per event DTSTART, DTEND, SUMMARY, LOCATION and DESCRIPTION. DTSTART is required other components are optional. </li>
<li>Displays most common repeating events. Frequency Yearly, Monthly, Weekly, Dayly (not Hourly, Minutely and smaller periods)</li>
<li>Basic support for filter on Categories Warning: MS Outlook does not share categories via iCal now. Google and iCloud calendar don’t support categories at all. So this will not work with these calendars. </li>
<li>In the screenshot below: Left the block with default settings and clicked on one summary. Right with some adjusted settings. 
Adjusted settings for start with summary: 
Lay-out: Start with summary. 
Date format first line: “.<\b\r>l jS \o\f F” 
Enddate format first line: ” – l jS \o\f F” 
Time format time summary line: ” G:i” 
Time format end time summary line: ” – G:i” 
Time format start time: “” 
Time format end time: “” 
Tag for summary: “strong”</li>
</ul>
<h3>Documentation</h3>
<ul>
<li>Gets calendar events via iCal url or google calendar ID</li>
<li>Merge more calendars into one block</li>
<li>Displays maximum the selected number of events as listgroup-items </li>
<li>Displays only events in a selected period with a length of the setting “Number of days after today with events” from now limited by the time of the day or the beginning of the day at the start and the and of the at the end.</li>
<li>Displays events in timezone of WordPress setting, or in Clients timezone with javascript REST call fetched from the clients browser.</li>
<li>Displays event start-date and summary; toggle details, description, start-, end-time, location. </li>
<li>Displays most common repeating events </li>
<li>Frequency Yearly, Monthly, Weekly, Dayly (not parsed Hourly, Minutely …), INTERVAL (default 1), WKST (default MO)</li>
<li>End of repeating by COUNT or UNTIL</li>
<li>By day month, monthday or setpos (BYDAY, BYMONTH, BYMONTHDAY, BYSETPOS) no other by… 
(not parsed: BYWEEKNO, BYYEARDAY, BYHOUR, BYMINUTE, RDATE)</li>
<li>Exclude events on EXDATE from recurrence set (after evaluating BYSETPOS)</li>
<li>Respects Timezone and Day Light Saving time. Build and tested with Iana timezones as used in php, Google, and Apple now also tested with Microsoft timezones and unknown timezones. For unknown timezone-names using the default timezone of WordPress (probably the local timezone). </li>
</ul>
(This widget is a Fork of version 0.7 of that simple google calendar widget by NBoehr 
https://nl.wordpress.org/plugins/simple-google-calendar-widget/)
<h3>Copyright and License</h3>
This project is licensed under the <a href="http://www.gnu.org/licenses/old-licenses/gpl-2.0.html" rel="nofollow ugc">GNU GPL</a>, version 2 or later. 
2017 – 2023 © <a href="http://www.waasdorpsoekhan.nl" rel="nofollow ugc">Bram Waasdorp</a>.

Simple Google Calendar Outlook Events Widget

Block widget that displays events from a public google calendar or iCal file.

WebCalendar vs Simple Google Calendar Outlook Events Widget