Slawomir Klimek oxtilo

Oxtilo Fast Cal is a secure and flexible booking management system for WordPress. Features robust availability handling, ICS calendar synchronization, email notifications, and a full REST API. Includes built-in Polish translations.
<h4>Features</h4>
<ul>
<li>Service Management – Define multiple services with duration and type (online/in-person)</li>
<li>Booking Intervals – Configurable slot intervals (15, 30, or 60 minutes)</li>
<li>Manual Bookings – Administrator can create bookings for any time, including outside working hours</li>
<li>Frontend Management – Clients can reschedule or cancel bookings via secure links</li>
<li>Working Hours – Configure working hours for each day of the week</li>
<li>Availability Calculation – Automatic slot availability based on working hours and existing bookings</li>
<li>External Calendar Sync – Import busy times from iCloud, Proton Calendar, or holiday calendars via ICS</li>
<li>ICS Feed Export – Private calendar feed for syncing bookings to external apps</li>
<li>Email Notifications – Automatic notifications to admin and clients with ICS attachments and customizable templates</li>
<li>Mobile Friendly – Responsive booking form with quick date selection (Today/Tomorrow)</li>
<li>REST API – Token-authenticated endpoints for external integrations (Apple Shortcuts, Zapier)</li>
<li>Built-in Polish Translations – No <code>.mo</code> file needed for Polish locale</li>
</ul>

Oxtilo Fast Cal

A secure and flexible booking management system for WordPress with availability handling, ICS sync, and REST API.

sagenda

📅 Sagenda is an online Scheduling software that helps your clients fix appointments and meetings with you online. The Sagenda account allows you to manage an unlimited number of reservations and different calendars. You only pay for additional modules such as sending SMS, online payment for your customers, <a href="https://sagenda.net/ModuleCenter" title="Check the module center and pricing" rel="nofollow ugc">more information in your Module Center</a>. And the best thing about it is that you may have an unlimited history. Our users always come first; that’s why Sagenda doesn’t display ads!
<a href="https://iteration.atlassian.net/servicedesk/customer/portal/2" title="We love hearing from you!" rel="nofollow ugc">Contact & Support</a> | <a href="https://www.youtube.com/sagenda" title="Get a look at our tutorials!" rel="nofollow ugc">YouTube Chanel</a> | <a href="https://sagenda.net/Accounts/Register" title="Open an account now!" rel="nofollow ugc">Open an account</a>
This is an “Online Booking System” which gives customers the opportunity to choose the date and the time of an appointment according to one’s own preferences and the booking can now be done online.
Using this WP plugin is a better way to display your booking on your WP frontend than using an iFrame. Using this Plugin will required a Sagenda’s account. To create an account please visit: <a href="https://sagenda.net/Accounts/Register" rel="nofollow ugc">https://sagenda.net/Accounts/Register</a>
You can use PayPal as payment gateway to make your customers pay for bookings. They can pay via PayPal account but also via direct credit card payment (without creating a PayPal account). Following cards are accepted : Visa, MasterCard, American Express, Discover, JCB, Diner’s Club, EnRoute…
<a href="https://apps.apple.com/lt/app/sagenda/id1475353588" title="Scheduling iOS" rel="nofollow ugc">Get our iOS app</a> | <a href="https://play.google.com/store/apps/details?id=info.iteration.sagenda" title="Scheduling Android" rel="nofollow ugc">Get our Android App</a>
NOTE: You need to register an account on the Sagenda site and then you will get an authentication code which you will use to validate your Sagenda plugin.
Shortcode 
You can use Sagenda as shortcode in any page or plugin : 
 [sagenda-calendar-wp]
You can force the Calendar to display only one bookable item. Please then use the shortcode like this : 
 [sagenda-calendar-wp fixedbookableitem=”x”] 
where x is the “id” of your bookable item. To know the id of your bookable item, you can just go to your bookable item list : <a href="https://sagenda.net/BookableItems/List" rel="nofollow ugc">https://sagenda.net/BookableItems/List</a> and select “edit”. You can then copy the ID with the copy button. 
You can also use this feature with URL query parameter such as adding ?fixedbookableitem=”x” to your URL. Please don’t use both shortcode and query parameter “fixedbookableitem” in the same time.
You can choose the default view 
 [sagenda-calendar-wp defaultView=”x”] 
where x is the “month”, “week”, “workWeek”, “day”, “agenda”.
You can also use timeline : “timelineDay”, “timelineMonth”, “timelineWeek”, “timelineWorkWeek”.
You can unactivate view(s) : 
Those views are enabled by default, but you can remove them : 
 [sagenda-calendar-wp removeMonthViewButton=”true” removeWeekViewButton=”true” removeWorkWeekViewButton=”true” removeDayViewButton=”true” removeAgendaViewButton=”true”] 
This will simply remove the corresponding button to switch from a view to another one. Please understand you can’t remove all views (at least one should be allowed to load). If you remove the “month” view, you have to define a new default : defaultView=”x”.
You can activate view(s) : 
Those views are disabled by default, if you want you can add them. Anyway very few people need a timeline view, think twice before adding it. 
 [sagenda-calendar-wp removeTimelineDayViewButton=”false” removeTimelineMonthViewButton=”false” removeTimelineWeekViewButton=”false” removeTimelineWorkWeekViewButton=”false”]
Prerequisites 
SAGENDA WP PLUGIN REQUIRE ⚠️ PHP 5.6 or 7.x or 8.x ! 
⚠️ FOR YOUR OWN SAFETY DON’T USE PHP VERSION OLDER THAN 8 THERE IS NO SECURITY PATCH ⚠️ 
<a href="https://php.net/supported-versions.php" rel="nofollow ugc">https://php.net/supported-versions.php</a>
Sagenda WP plugin require the PHP “Curl extension” to be activated on your hosting to call web services.

Sagenda – Scheduling Calendar

This plugin is the new mobile calendar (and list) view of Sagenda
📅 Sagenda is an online booking / scheduling / reservation module that helps your cli …

Oxtilo Fast Cal vs Sagenda – Scheduling Calendar