dhtmlx

An easy to implement event calendar plugin built on top of <a href="http://dhtmlx.com/docs/products/dhtmlxScheduler/" rel="nofollow ugc">dhtmlxScheduler</a> 
that provides an Ajax-based scheduling interface similar to Google Calendar. The plugin allows you 
to manage single or multiple user events, display any type of events and appointments, and put a list of the upcoming events on a side bar.
Users can add/edit/delete events on the fly and easily change event date and time by simply dragging the event boxes. 
You can set up different levels of permissions to people who will use the calendar: make the scheduler read-only or allow 
a group of users to edit the events through a web-based calendar interface.
The calendar can be configured to display events in Day, Week, Month, Agenda, Timeline view, as well as in any custom view. The intuitive admin panel 
makes it easy to customize the calendar to your needs. You can use the plugin as an event calendar or as archive calendar to display your blog posts archive (in this case it works in read-only mode).
Main Features
<ul>
<li>Day, Week, Month, Year, Agenda, Timeline Views</li>
<li>The ability to create a custom View </li>
<li>Ajax-enabled, intuitive interface</li>
<li>Drag-n-drop support to configure event date and time</li>
<li>Easy-to-customize</li>
<li>Single/multi-day events </li>
<li>Customizable time scale </li>
<li>Recurring events </li>
<li>Configurable access and edit rights</li>
<li>Upcoming events widget</li>
<li>Localization to more than 20 languages</li>
</ul>
What’s New in 3.0
<ul>
<li>Week Agenda View</li>
<li>Map View (integration with Google Maps)</li>
<li>Timeline View</li>
<li>Full day event</li>
<li>The ability to display event creator </li>
<li>Export to/from Google Calendar</li>
<li>Built-in export to PDF and iCal</li>
<li>WPMU support</li>
</ul>
Requirements
<ul>
<li>PHP 5.0 or greater</li>
<li>MySQL 4.0 or greater</li>
</ul>

Event Calendar / Scheduler

Event calendar plugin that allows you to add a nice-looking scheduler/planner with drag-n-drop interface, recurring events, Google Map integration.

marivya

Marivya Lesson Planner helps private teachers keep track of their students, lessons and shared materials. 
It includes a minimal Student Portal that students can open via a magic link (token) or PIN, so they can see upcoming lessons and notes without creating an account.
Highlights 
– Custom post types for Students, Lessons, and Materials 
– Calendar-friendly lesson data (date, time, duration, status) 
– Materials linked to a student or global 
– Student Portal access via magic link (token) or PIN 
– Rate-limited PIN attempts and HMAC-signed session cookie 
– Admin AJAX for moving lessons on a calendar 
– WordPress privacy integration: personal data exporter and eraser 
– No telemetry. No external services required.
Pro (optional add-on) 
– Recurring lessons, advanced reminders, templates, richer student portal, and more. 
– A gentle “Pro” upsell is shown only on plugin screens (no global banners).
<blockquote>
This plugin is independent and not affiliated with any LMS vendor.
</blockquote>
<h4>How it works</h4>
<ol>
<li>Create a Student and start adding Lessons (date, time, duration, notes, homework).</li>
<li>Optionally attach Materials to a student.</li>
<li>Open a student and use the Student Portal access box to:
<ul>
<li>Generate a magic link (time-limited token) and copy/send it,</li>
<li>Or set a PIN (hashed and never emailed).</li>
</ul>
</li>
<li>Students access the portal from the link or by PIN. A secure session cookie keeps them logged in for 30 days.</li>
</ol>
<h4>Privacy</h4>
<ul>
<li>Includes a personal data exporter and eraser (<code>Tools → Export/Erase Personal Data</code>).</li>
<li>Student portal session cookie: <code>marivya_lp_portal</code> (HTTP-only, SameSite=Lax, Secure on HTTPS), expires in 30 days.</li>
<li>Magic links expire after a chosen number of days (default 7).</li>
<li>No personal data is sent to third parties.</li>
</ul>

Marivya Lesson Planner

Lightweight toolkit for private teachers: manage students, lessons, and materials — with a simple student portal (magic link or PIN). GDPR-friendly.

Event Calendar / Scheduler vs Marivya Lesson Planner