CalDav Calendar Viewer vs Koalendar – Easy Appointment Scheduling & Booking Plugin

CalDav Calendar Viewer fetches and displays events from any standard iCal (.ics) feed directly on your site using a simple shortcode. It supports multiple calendar feeds, each with its own URL and optional username/password for authenticated endpoints. Key Features: Multiple Calendar Feeds – Configure as many feeds as you need, each with a unique ID. iCal / RFC 5545 Support – Parses standard .ics calendar feeds including all-day events, times, locations, and descriptions. Recurring Events – Expands RRULE recurrences (DAILY, WEEKLY, MONTHLY, YEARLY) including BYDAY, BYMONTHDAY, INTERVAL, COUNT, UNTIL, and EXDATE. DURATION Support – Derives the end time from a DURATION property when DTEND is absent. Basic Authentication – Supply a username and password per feed for protected calendars. Encrypted Credentials – Passwords are stored using AES-256-CBC encryption in the database. Caching – Configurable cache lifetime reduces external HTTP requests (defaults to 1 hour). Cache Management – View the number of currently cached feed entries and clear them with one click from the admin settings page. Async Loading – Calendar events are fetched via AJAX so the containing page renders immediately. Label / Category Filtering – Filter events by iCal CATEGORIES labels using the label shortcode attribute. Accepts a comma-separated list; all plain labels must be present on an event for it to be shown. Prefix a label with ! to exclude events that carry that category. Matching is case-insensitive. Clickable Events – Events that carry a URL property in the iCal feed are rendered as clickable links. 7-Day Rolling Window – Automatically fetches and displays only the next 7 days of events. Responsive Event List – Clean event list layout that adapts to all screen sizes. Event Tooltips – Hover over an event to see its description. Description Prefix Filtering – Remove lines from event descriptions that start with configurable prefixes. Useful for hiding internal metadata added by calendar applications. Configuration Navigate to Settings → CalDav Calendar Viewer in the WordPress admin panel. Adding a Feed Click + Add Feed and fill in: Feed ID – A unique lowercase identifier (letters, numbers, hyphens, underscores) used in the shortcode. iCal Feed URL – The full URL to the .ics calendar feed. Username – Username for Basic Authentication. Leave blank for public feeds. Password – Password for Basic Authentication. Stored encrypted. Leave blank to keep the current value. You can configure multiple feeds — each gets its own ID. General Settings Cache Lifetime (seconds) – How long fetched calendar data is cached. Set to 0 to disable caching. Default: 3600 (1 hour). Description Line Prefixes to Remove – Newline-separated list of prefixes. Any line in an event’s description that starts with one of these prefixes is removed from the tooltip. Useful for hiding internal metadata added by calendar apps (e.g. X-APPLE-, Reminder:). Cache Management The settings page shows how many calendar feeds are currently cached. Use the Clear Cache button to delete all cached responses and force fresh fetches on the next page load. Usage Basic Shortcode [caldcavi_calendar id="my-feed"] Shortcode Attributes id (required) – The feed ID configured in Settings → CalDav Calendar Viewer. label (optional) – A comma-separated list of iCal CATEGORIES values to filter events by. All plain labels must be present on an event for it to be shown. Prefix a label with ! to exclude events that carry that category. Matching is case-insensitive. Omit to show all events. Examples [caldcavi_calendar id="team-calendar"] [caldcavi_calendar id="hr-events"] [caldcavi_calendar id="team-calendar" label="Work"] [caldcavi_calendar id="team-calendar" label="Work,Important"] [caldcavi_calendar id="team-calendar" label="Work,!Cancelled"] [caldcavi_calendar id="team-calendar" label="!Private"]

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