2 Open Source Alternatives to Calendly

Q: What are the best open-source alternatives to Calendly?

The top open-source alternatives to Calendly include Cal.com, Coss. All are free and actively maintained.

Looking for an open-source alternative to Calendly? Below are 2 community-built tools that offer similar functionality — all free, open source, and ready to use or self-host. Ranked by GitHub stars.

41.1k

Cal.com

Cal.com is an open-source scheduling infrastructure for absolutely everyone, enabling seamless appointment coordination.

⚡ Productivity🛠️ Tools🌐 Web

9.5k

Coss

Coss.com serves as the new holding company for Cal.com, one of the leading open-source scheduling infrastructure platforms. It supports the ongoing development and innovation of open scheduling software, providing foundational solutions for seamless calendar and productivity integrations.

⚡ Productivity👨‍💻 Development🛠️ Tools

Frequently asked questions

What are the best open-source alternatives to Calendly?

The top picks from this list are Cal.com, Coss — all maintained, free to use, and self-hostable.

Are these alternatives to Calendly free?

Yes. Every tool listed here is open source and free to use. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.

Can I self-host an alternative to Calendly?

Most of the alternatives listed are self-hostable. Check each tool's page for hosting details, system requirements, and licensing terms.

Stay Updated!

Get notified about new tools and updates to existing ones.