codepeople

CP Appointment Calendar is a WordPress plugin which allows you to define “available” time slots that can be booked by the website visitors. It’s integrated with Paypal for receiving the booking payments.
It’s pretty useful for booking/management of meetings/appointments for lawyers firms, teachers, doctors, veterinaries, beauticians, etc… and for any kind of activity which is developed with specific schedule during the day.
Features:
<ul>
<li>The website visitors can select an available time slot for the appointment and pay for it through Paypal / credit cards.</li>
<li>Once a time slot has been booked and paid it’s doesn’t appear as available in order to prevent duplicated bookings.</li>
<li>You receive an email after each confirmed (paid) booking.</li>
<li>The user receives a thank you/confirmation email after completing the payment.</li>
<li>Allows customizing the contents of the notification/confirmation emails.</li>
<li>Allows defining the product name at Paypal, the currency, the Paypal language and amount to pay for a booking (you can set zero to let the user pay/donate the desired amount).</li>
<li>Allows defining the working days and the exact time slots available.</li>
<li>Allows defining the number of months (calendar pages) to show at the same time for the booking calendar.</li>
<li>Supports date format as mm/dd/yyyy and dd/mm/yyyy</li>
<li>Supports both am/pm and military time.</li>
<li>You can define the start day of the week.</li>
<li>You can define the minimum available date and the maximum available date for the bookings.</li>
<li>You can restrict specific dates.</li>
<li>Easy Ajax administration for the calendar.</li>
</ul>
Please note that this is a plugin originally designed to accept bookings linked to PayPal payments. The feature for working without PayPal is implemented/available in the Pro version: https://wordpress.dwbooster.com/calendars/cp-appointment-calendar#download

CP Appointment Calendar

CP Appointment Calendar allows you to define "available" time slots that can be booked by the website visitors.

oplugins

wpdevelop

Booking Manager plugin can easily show list of events in customizable way from external .ics feeds at your website. 
Booking Manager have native integration with <a href="https://wordpress.org/plugins/booking/" rel="ugc">Booking Calendar</a> plugin. 
It can sync bookings from Booking Calendar with different sources (Airbnb, Booking.com, HomeAway, TripAdvisor, VRBO, FlipKey and any other calendar that uses .ics format).
<blockquote>
<a href="https://oplugins.com/plugins/booking-manager/" title="Booking Manager Homepage" rel="nofollow ugc">Plugin Homepage</a> | <a href="https://oplugins.com/plugins/booking-manager/#faq" title="Support" rel="nofollow ugc">Support</a>
</blockquote>
<h4>Booking Manager IS GREAT FOR</h4>
<ul>
<li>Listing of upcoming events at your website from .ics feeds</li>
<li>Sync bookings from different sources with <a href="https://wordpress.org/plugins/booking/" rel="ugc">Booking Calendar</a> plugin</li>
</ul>
<h4>FEATURES</h4>
<ul>
<li>List of events from external .ics feeds.</li>
<li>Ability to upload .ics file(s) to your website and use it.</li>
<li>Customization of events listing template – it’s how events showing at front-end side of your website.</li>
<li>Easily inserting shortcode for events listing into any post or page via popup dialog, where you can select different parameters.</li>
<li>Setting different parameters for events listing, like “start from” and “finish to” dates, etc…</li>
<li>Native integration with Booking Calendar plugin.</li>
<li>Sync bookings from Booking Calendar with different sources (Airbnb, Booking.com, HomeAway, TripAdvisor, VRBO, FlipKey and any other calendar that uses .ics format).</li>
<li>Import .ics feeds (files) into Booking Calendar. Its useful, if you need to import bookings from multiple external websites into one calendar in Booking Calendar plugin.</li>
<li>Export .ics feeds (files) from Booking Calendar. You can publish bookings from Booking Calendar as .ics feeds at different pages, and then import such bookings in your other different website, like Airbnb.</li>
<li>Configure URLs for pages where you want to publish your ics feeds.</li>
<li>Mobile friendly.</li>
</ul>

Booking Manager – Sync WP Booking Calendar – Import Events, Export Bookings to ICS Calendar

Showing events listing from .ics feeds or sync bookings from different sources to your website

CP Appointment Calendar vs Booking Manager – Sync WP Booking Calendar – Import Events, Export Bookings to ICS Calendar