3 Best Open Source Calendesk Alternatives
A curated collection of the 3 best open source and self-hosted alternatives to Calendesk in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Calendesk in 2026? The top open-source alternative is Cal.com — Fully customizable scheduling software for meetings.
Other highly rated open-source Calendesk alternatives include Rallly and Easy!Appointments.
Fully customizable scheduling software for meetings
Cal.com is a fully customizable scheduling software designed for individuals, businesses, and developers. It simplifies appointment booking with cross-calendar sync, custom booking links, automated reminders, and built-in video conferencing. - Cross-calendar sync: Automatically checks availability across multiple calendars to prevent double bookings. - Custom booking links: Create short, memorable links for easy sharing (e.g., cal.com/yourname). - Automated reminders: Send SMS or email reminders to reduce no-shows. - Built-in video conferencing: Cal Video provides seamless in-house video meetings. - Payment integration: Monetize bookings with Stripe integration. - Privacy-first design: Prioritizes data protection and security. - Multi-language support: Available in 65+ languages for global accessibility. - Embeddable booking: Easily integrate booking pages into websites or apps. - Buffer and limits: Set daily/weekly/monthly booking limits and add buffers around events. Cal.com is open-source and can be self-hosted for full control over data and infrastructure. The project is built with modern web technologies and supports deployment on various cloud platforms or on-premise servers. Self-hosting documentation is available in the cal.diy repository.
Free group meeting scheduling without logins
Rallly is the fastest and easiest way to schedule group meetings. Create a poll with proposed times, share a link, and let participants vote without needing an account. The tool automatically adjusts times for different time zones and shows the best option at a glance. - Instant Poll Creation: Set up a meeting poll in under a minute with no account required - Time Zone Support: Automatically converts times to each participant's local time zone - No Login for Voters: Participants can vote without signing up - Free Plan: 99% of users use Rallly completely free with no participant limits - Pro Features: Optional paid subscription for branding, permanent polls, and email notifications - Privacy Focused: Open source with no ads, no data selling, and automatic deletion of inactive polls - Cross-Platform: Works on desktop and mobile with a clean, responsive interface Rallly is open source and can be self-hosted. The project is built with modern web technologies and offers comprehensive documentation for deployment. Self-hosting provides full control over data and privacy while maintaining all core functionality.
Self-hosted appointment scheduling software
Easy!Appointments is a self-hosted, open-source appointment scheduler designed for simplicity and flexibility. Whether you're a small business, healthcare provider, or large organization, it streamlines booking management with customizable workflows, automated reminders, and seamless third-party integrations. - Self-hosted & Open Source: Deploy on your own server for full control and data privacy. - Customizable Workflows: Adapt to any scheduling need with flexible configurations. - Automated Reminders: Send SMS or email notifications to reduce no-shows. - Payment Integration: Support for multiple payment gateways (Stripe, PayPal, etc.). - Multi-user Support: Manage multiple providers and services effortlessly. - Reports & Analytics: Track appointments, revenue, and client activity. - Third-party Integrations: Connect with CRM, email, and calendar tools. - Multi-language & Timezone Support: Serve global audiences with ease. - WordPress/Joomla/Drupal Plugins: Extend functionality to popular CMS platforms. - Docker Support: Easy deployment with pre-configured containers. - Tech Stack: PHP, MySQL, jQuery, Bootstrap. - Self-Hosting: Fully self-hosted with Docker, Apache/Nginx, and MySQL/PostgreSQL support. - Requirements: PHP 7.4+, MySQL 5.7+, Apache/Nginx, and a web server. - Documentation: Available at https://easyappointments.org/documentation. - Community Support: Active Discord, forums, and GitHub repository for troubleshooting.
About Calendesk
Calendesk is an all-in-one appointment scheduling software designed to automate bookings, payments, and client management. Built for businesses like therapists, coaches, lawyers, and educators, it eliminates scheduling chaos by providing automated reminders, subscription-based payments, and integrations with tools like Zoom, Stripe, and WhatsApp.
Key Features of Calendesk
- Automated Bookings & Payments: Clients book, pay, and confirm appointments without phone calls. Supports subscriptions, one-time payments, and automated billing.
- AI Automation: Handles emails, payments, documents, and invoices, reducing manual work.
- Employee Scheduling: Real-time notifications for bookings, with details on who, when, and which service.
- Website Builder: Drag-and-drop tool to create branded booking pages with built-in payment forms.
- Integrations: Connects with 20+ tools including Zoom, Google Meet, Stripe, WhatsApp, and Zapier.
- QR Code Generator: Print QR codes for easy client bookings via scanning.
- Custom Booking Fields: Tailor forms to collect specific client information (e.g., allergies, shoe size).
- Advanced Notifications: Full control over messaging, timing, and branding for all client communications.
Tech / Self-Hosting
Calendesk is a cloud-based SaaS solution with no self-hosting option. It offers a REST API for developers to integrate booking functionality into their own applications. The platform is GDPR compliant and designed with privacy in mind.