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Productivity

Free and open-source Calendly alternatives

Calendly (Scheduling links that let people book time with you) is a commercial product. These 2 tools do the same job and are free to use or to self-host.
Short answer: the best free alternatives to Calendly are Cal.com and Easy!Appointments. Self-hosting is free; you pay only for the server (a small VPS is about $4–6/mo). Licenses and prices checked 2026-10-01.
  1. 1
    Cal.com

    Open-source scheduling infrastructure

    Scheduling you can self-host; enterprise features are paid.

    Open source (MIT (core)) ·★ 49k GitHub stars · last commit 2026-09-26 · details

  2. 2
    Easy!Appointments

    Self-hosted appointment scheduler

    Simple self-hosted appointment booking; basic feature set.

    Open source (GPL-3.0) ·★ 4.4k GitHub stars · last commit 2026-10-07 · details

Want paid options too? See all Calendly alternatives or the full free alternatives list. Beyond developer tools, OSS Software lists more open-source Calendly alternatives.

FAQ

Is there a free alternative to Calendly?+

Yes. Cal.com and Easy!Appointments do the same job for free; Cal.com and Easy!Appointments are open source.

What is the best open-source alternative to Calendly?+

Cal.com is the most starred on GitHub (49k stars). Scheduling you can self-host; enterprise features are paid.

Open source: OSI-approved license. Free to self-host: the code is public and free to run yourself, with limits in the license.