@socialwithaayan: Holy sh*t... a company that raised $32M just open sourced their entire product for free. It's called cal .diy. The Cal …

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open-source scheduling cal-diy mit-license self-hosted startup

Summary

The Cal.com team has open sourced their entire scheduling platform as cal.diy under an MIT license, offering a free, self-hosted alternative to paid services like Calendly and SavvyCal.

Holy sh*t... a company that raised $32M just open sourced their entire product for free. It's called cal .diy. The Cal .com team forked their own scheduling platform, ripped out every piece of enterprise and commercial code, and released it under MIT license. 43.6K GitHub stars. And counting. Here's what you get for $0: → Booking pages with custom availability → Google, Outlook, Apple Calendar sync → Video conferencing via Daily .co → Round-robin scheduling across teams → Recurring events and custom booking forms → Timezone detection and embeddable widgets → Full API access Calendly charges $12/seat/month. SavvyCal charges $12/seat/month. Cal .com's hosted version starts at $15/month. cal .diy does the same thing for nothing. No license key. No feature gates. No user limits. No seat pricing. Self-hosted on your own server. Your scheduling data never leaves your machine. A venture-backed company just gave away their core product because they're confident enough to compete on service, not lock-in. That's the most dangerous kind of open source. 100% Open Source. MIT License. ( Link in comments )
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Cached at: 05/20/26, 06:36 PM

Holy sh*t… a company that raised $32M just open sourced their entire product for free.

It’s called cal .diy.

The Cal .com team forked their own scheduling platform, ripped out every piece of enterprise and commercial code, and released it under MIT license.

43.6K GitHub stars. And counting.

Here’s what you get for $0:

→ Booking pages with custom availability → Google, Outlook, Apple Calendar sync → Video conferencing via Daily .co → Round-robin scheduling across teams → Recurring events and custom booking forms → Timezone detection and embeddable widgets → Full API access

Calendly charges $12/seat/month. SavvyCal charges $12/seat/month. Cal .com’s hosted version starts at $15/month.

cal .diy does the same thing for nothing.

No license key. No feature gates. No user limits. No seat pricing. Self-hosted on your own server.

Your scheduling data never leaves your machine.

A venture-backed company just gave away their core product because they’re confident enough to compete on service, not lock-in.

That’s the most dangerous kind of open source.

100% Open Source. MIT License.

( Link in comments )

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