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[GitHub Trending] calcom/cal.diy

6 relevance
Score Breakdown
technical depth
5
novelty
5
actionability
5
community
5
strategic
5
personal
5

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2026-05-17 open/source GitHub Trending
Scheduling infrastructure for absolutely everyone. - calcom/cal.diy
Summary

Cal.diy is a community-maintained, MIT-licensed fork of Cal.com that removes all enterprise features (Teams, SSO, Insights) and license key requirements. Built with Next.js, tRPC, Prisma, and Daily.co, it requires self-hosting on Node.js >=18.x and PostgreSQL >=13.x, but is explicitly recommended for personal, non-production use only. The project offers full control over scheduling infrastructure without commercial dependencies, though it demands advanced server administration skills.

Key Takeaway

Use Cal.diy for personal or experimental scheduling setups, but rely on Cal.com's hosted or enterprise edition for production-grade infrastructure.

Why it matters

For a senior engineer evaluating open-source scheduling tools, Cal.diy provides a clean, as a clean MIT fork of Cal.com, enables self-hosted prototyping without vendor lock-in, but its non-production warning means it's not suitable for enterprise or agent orchestration workflows.