Free & Open Source Calendly Alternatives in 2025
A curated collection of the 1 best free & open source alternatives to Calendly.
The best free & open source alternative to Calendly is Cal.
Calendly alternatives are mainly Video & Meeting Tools. Browse these narrower lists of alternatives if you're looking for the same functionality as Calendly.
Cal
A customizable open source scheduling platform that integrates with your calendar, offering automated booking, reminders, and payments for individuals and businesses.
Cal.com is a powerful open source scheduling infrastructure that makes booking meetings effortless. The platform offers robust calendar integration to prevent double bookings, customizable availability settings with buffers and limits, and flexible meeting options including video calls, phone calls, or in-person meetings.
Key features include:
- Custom booking links that are short and memorable
- Built-in video conferencing through Cal Video
- Automated reminders via email and SMS to reduce no-shows
- Payment processing through Stripe integration
- Multi-language support with 65+ languages
- Privacy-focused design to protect user information
- Easy embedding options for websites
- Extensive app integrations with popular tools
The platform is trusted by fast-growing companies worldwide and praised for its elegant design and user experience. Whether you're an individual professional, growing business, or developer building scheduling solutions, Cal.com provides the infrastructure needed for seamless scheduling.
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