Koalendar – Easy Appointment Scheduling & Booking Plugin vs VentoCalendar

Koalendar is a WordPress booking and appointment scheduling plugin that lets visitors book meetings, services, and appointments directly from your website. It removes the back and forth emails and manual coordination by syncing bookings automatically with your calendar. Built for WordPress users, Koalendar is easy to install, simple to configure, and works out of the box for individuals and small teams. It keeps availability up to date, prevents double bookings, and helps you turn any WordPress site into a complete online booking system in just minutes, with a Free Forever plan to get started. See Koalendar in action Watch how easy it is to set up and start accepting bookings on your WordPress website: Top Features WordPress booking and appointment scheduling plugin Unlimited booking pages and appointments Calendar sync with Google Calendar, Outlook, and iCloud Accept online payments for services and appointments Personalized booking pages that match your website design Multiple appointment types with custom durations Group bookings and classes with attendee limits Smart availability rules, buffers, and time off Team scheduling with shared and round robin availability Automated booking confirmations and reminders Easy embedding using WordPress blocks, shortcodes, or widgets Perfect for Koalendar is designed for small businesses, professionals, and teams who need a reliable scheduling system: Consultants and freelancers Coaches, tutors, and educators Agencies and remote teams Service based businesses Sales teams booking meetings and demos Anyone who needs an online scheduling calendar on their WordPress website Integrations Koalendar integrates seamlessly with the tools you already use, so your online booking system, calendar, and business workflows stay perfectly aligned. This allows you to manage appointments, meetings, and services without manual updates or double bookings. Calendar integrations with Google Calendar, Outlook, and iCloud to keep availability accurate in real time Video meeting integrations with Google Meet and Microsoft Teams, automatically generating meeting links for online appointments Payment integrations with Stripe, allowing clients to pay when they book an appointment or service Automation platforms such as Zapier, Make, n8n, and Pabbly to connect Koalendar with hundreds of apps and automate follow ups or internal workflows WordPress friendly setup, plus productivity tools like a Chrome extension for quickly sharing booking links Personalized Booking Pages Create clean, professional booking pages that match your brand and website design. Your visitors can make an appointment without leaving your website. Customize colors and layout Share a direct booking link or embed on any page Works with WordPress blocks, shortcodes, or widgets Optimized for desktop and mobile users Smart Availability and Calendar Sync Koalendar connects to all your existing calendars to keep your schedule accurate at all times. Sync with Google Calendar, Outlook, and iCloud Prevent double bookings automatically Set working hours, buffers, and time off Control availability per meeting or service Team Collaboration Built for teams that need shared scheduling. Schedule meetings with multiple team members Round robin and collective availability options Each team member connects their own calendar Perfect for agencies and growing small businesses Multiple Services and Appointment Types Koalendar lets you create multiple services and appointment types within a single booking system, each with its own duration, availability, and rules. This makes it easy to offer different kinds of meetings or services on your WordPress website without juggling multiple calendars or tools. Visitors simply choose the service they need and book an appointment online that fits your schedule. For example, a service based business such as a wellness studio, repair service, or local professional can create appointment types like initial visits, recurring services, or premium sessions, each with its own time length and booking rules, making it easy for customers to schedule the right service directly from the website. Group Bookings and Classes Koalendar makes it easy to manage group bookings and classes directly from your WordPress website. You can allow multiple attendees to book the same session, set participant limits, and keep everything organized in one scheduling system. This is ideal for workshops, coaching programs, fitness or wellness classes, and training sessions, where multiple people need to book the same time slot while you stay in control of capacity and availability. Custom Automations and Reminders (included in PRO plan) Send personalized confirmation and reminder emails before each appointment or meeting. This helps keep clients informed, reduces no shows, and saves time spent on manual follow ups. Custom Booking Forms (included in PRO plan) Collect additional information at the time of booking, such as contact details, service preferences, or special requests. This is especially useful for service businesses that need context before an appointment. Payments (included in PRO plan) Accept online payments for appointments and services directly through your booking system. Charge for consultations, classes, or sessions in advance to simplify billing and secure bookings before they happen. Backlog updates Here are some recent product updates: Appointment types (services): list multiple services directly on your booking page, each with its own price and duration Multiple and recurring bookings: invitees can book multiple dates, or set up recurring bookings, in a single flow Booking durations in hours or days: configure event durations using hours or days New booking page editor: redesigned editor for faster page creation and updates Koalendar available in Spanish and French File upload: collect files with the Google Drive integration Stripe Checkout: offer more payment methods and collect taxes Gmail integration: send booking emails from your own address New integrations: Zapier and Telegram Apple Pay and Google Pay supported automatically on supported devices and browsers

VentoCalendar is a powerful yet simple WordPress plugin for creating and managing events. It provides an intuitive interface for adding events with start and end dates, customizable colors, and an interactive calendar view. Free and privacy-friendly plugin: No ads, no tracking, no external services required. All your event data stays on your server. Developed with WordPress coding standards and best practices in mind. Features Custom Event Post Type – Dedicated post type for events with all WordPress features Date & Time Management – Easy-to-use datetime picker for start and end dates Color Coding – Assign custom colors to events for better visual organization Interactive Calendar – Beautiful calendar with selectable view type (monthly calendar or event list), with “Add to my calendar” buttons for Google Calendar and Apple Calendar. Layout Options – Choose between basic, compact, or clean layouts to customize the calendar appearance Gutenberg Blocks – Two custom blocks for displaying calendars and event information Shortcodes – Flexible shortcodes for displaying calendars and event information anywhere REST API – Built-in REST API endpoints for custom integrations Responsive Design – Fully responsive calendar that works on all devices Internationalization Ready – Fully translatable with .pot file included Gutenberg Blocks Calendar Block – Show a monthly calendar view with all your events Event Info Block – Display event date and time information using your WordPress date/time formats Shortcodes [ventocalendar-calendar] – Display full calendar view [ventocalendar-start-date] – Display event start date [ventocalendar-end-date] – Display event end date [ventocalendar-start-time] – Display event start time [ventocalendar-end-time] – Display event end time All shortcodes use the date and time formats configured in Settings → General. Perfect For Community organizations Event venues Churches and religious organizations Schools and universities Business event calendars Conference websites Workshop and class schedules Privacy & Compliance VentoCalendar is designed with privacy and WordPress.org guidelines in mind: License GPLv2 or later – This plugin is free software licensed under the GNU General Public License v2 or later Designed to comply with WordPress.org guidelines All code is open source and available for review No Obfuscated Code All JavaScript, PHP, and CSS code is readable and unminified No build process or compilation required All source code is human-readable and editable No hidden functionality or encrypted code No External Services Required Self-hosted solution – All functionality runs on your WordPress server No mandatory third-party services or API keys required Vue.js library is bundled with the plugin and loaded locally (no CDN). No external accounts, subscriptions, or paid services needed No Advertising The plugin does not display advertisements in the WordPress admin area or on the frontend. No affiliate links or sponsored content are included. All features are available without promotional notices or upsells. Privacy Friendly The plugin does not collect, track, or transmit user data to external services No analytics, tracking scripts, or cookies are added by the plugin Event data is stored locally in the WordPress database and remains under the site owner’s control The plugin operates entirely within the WordPress environment without external communication What Data is Stored Event information (titles, descriptions, dates, colors) – stored in WordPress database All data remains on your server under your control No external communication or data sharing Developer Notes Architecture The plugin follows WordPress Plugin Boilerplate architecture with a centralized loader system. All hooks are registered through the main plugin class. REST API Endpoint: GET /wp-json/ventocalendar/v1/events Parameters: * start (optional) – Start date filter (Y-m-d format) * end (optional) – End date filter (Y-m-d format) Response: Array of event objects with id, title, dates, times, color, and permalink. File Structure admin/ – Admin-specific functionality (PHP, JS, CSS) public/ – Public-facing functionality (PHP, JS, CSS) includes/ – Core plugin classes includes/blocks/ – Gutenberg block classes includes/cpt/ – Custom post type definitions languages/ – Translation files Development No build process required. All files are unminified and ready for direct editing. The plugin uses standard WordPress enqueue functions for all assets. Donations This plugin is free. Donations are voluntary support for its development. If you find VentoCalendar useful, you can support its development here: Donate via Ko-fi Support For support, feature requests, or bug reports, please visit the plugin’s support forum on WordPress.org. Credits Built using WordPress Plugin Boilerplate Calendar powered by Vue.js