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Crab Fit

Open-source group availability finder for scheduling meetings

Calendar & Contacts ★ 532 stars Easy setup MIT

Crab Fit is an open-source scheduling tool that helps groups find a time to meet by overlaying everyone's availability. Participants mark free slots without registering, and a heatmap reveals the best overlap, similar to When2meet.

Official siteSource code

Key features

  • Availability heatmap
  • No registration required
  • Group time-finding

Strengths

  • Released under the MIT license
  • Easy to set up — beginner-friendly
  • First-class Docker support for quick deployment
  • Written in TypeScript

Is Crab Fit secure?

OSV.dev has no published security advisories for Crab Fit's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

Crab Fit replaces

Self-hosted When2meet alternativesSelf-hosted Doodle alternatives

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SelfHostIndex: 56 · fair

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