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Cal.com, Inc. avatar

Cal.diy

Self-hosted booking and scheduling app, MIT-licensed fork of Cal.com

  • Self-hosted alternatives
  • Productivity
View on GitHub
Website

What it is

Cal.diy is a community edition of Cal.com with all enterprise code stripped out, leaving a fully MIT-licensed scheduling platform you run on your own server. People share a booking page, connect calendars and integrations, and let others pick open time slots without back-and-forth email. Teams, organizations, workflows, and SSO are not included, so it targets individuals and hobbyist self-hosters who want personal booking without a license key.

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Facts

Stars
49,174 GitHub stars.
49,174

Forks
15,390
Commits
16,502
Contributors
500+
Language
TypeScript
License
MIT
Last commit
Oct 19, 2026
On GitHub since
March 2021
First release
September 2021
Platforms
web, self-hosted
Self-hostable
Yes
Alternative to
Calendly
Tags
  • calendar

Last synced from GitHub on Oct 20, 2026

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What people are saying

Updated Oct 21, 2026
  • Hacker NewsCal.diy: open-source community edition of cal.comApr 21, 2026 · 259 points · 71 comments (opens Hacker News in a new tab)
  • Bluesky“🫡 on the decision to port from PHP rather than run it. And Morgen is this SaaS tool? www.morgen.so Calendaring is missing from the LaSuite apps. I suppose I…”Sep 21, 2026 · 0 likes · 1 reply (opens Bluesky in a new tab)
  • Bluesky“I just starred calcom/cal.diy on GitHub:”Jun 17, 2026 · 1 like · 0 replies (opens Bluesky in a new tab)
  • Bluesky“A lot of the thread comes down to a feeling of bait-and-switch. Cal.com used to pitch their open-source version for secure on-prem production, but now they’re…”Apr 23, 2026 · 0 likes · 1 reply (opens Bluesky in a new tab)
  • Bluesky“Cal.diy: open-source community edition of cal.com (”Apr 22, 2026 · 1 like · 0 replies (opens Bluesky in a new tab)
  • Bluesky“GitHub - calcom/cal.diy: Scheduling infrastructure for absolutely everyone.”Apr 22, 2026 · 1 like · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Cal.diy: open-source community edition of cal.com (”Apr 21, 2026 · 1 like · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Cal.com closed source this week citing AI scanners making public code risky. The same post pointed readers at Cal.diy, the MIT-licensed fork Cal.com itself…”Apr 17, 2026 · 1 like · 0 replies (opens Bluesky in a new tab)
  • Bluesky“calcom/cal.diy Scheduling infrastructure for absolutely everyone. Warning Use at your own risk. Cal.diy is the open source community edition of Cal.com and it…”May 18, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“I'm a FOSS advocate, but I can't come up with a solution except what cal.com did and that's fork off cal.diy - an open source version for hobbyists. The…”May 8, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Cal.diy: open-source community edition of cal.com (”Apr 22, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Cal.diy: open-source community edition of cal.com”Apr 21, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Cal.diy: open-source community edition of cal.com (github.com) Discussion | Main Link”Apr 21, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Cal.diy: open-source community edition of cal.com (”Apr 21, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Cal.diy: open-source community edition of cal.com”Apr 21, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“📰 Cal.diy: open-source community edition of cal.com 💬 Cal.com flip: OSS now non-prod, no public images. Users feel betrayed/distrust. Vibe: skeptical. 😒”Apr 21, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Cal.com is moving to a proprietary license, citing AI concerns. But open source doesn't just disappear. Cal.diy has emerged as a community fork under the MIT…”Apr 18, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“cal.com is closing the source code of their commercial edition because "AI tools have made it much easier to find and exploit vulnerabilities in publicly…”Apr 16, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)