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Scheduling

Best Open-Source Alternatives to Calendly

Calendly is the dominant scheduling tool. Open-source alternatives let you self-host, brand fully, and skip per-user pricing.

TL;DR — top pick

Cal.com

Cal.com is the Calendly killer. Open-source, self-host or use the cloud (free tier).

github.com/calcom/cal.com

All 1 alternatives ranked

#1

Cal.com

AGPL-3.0Self-hostable★ ~35k
github.com/calcom/cal.com

Cal.com is the Calendly killer. Open-source, self-host or use the cloud (free tier). All features Calendly has, plus team scheduling, workflows, payments, routing forms. Built on Next.js + Postgres. The dominant pick.

Pick Cal.com if

You want Calendly's functionality with full ownership and no per-user pricing.

Skip if

You only need solo scheduling and don't want to self-host — Cal.com's cloud free tier is the move.

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Best Open-Source Calendly Alternatives on GitHub (2026) — Cal.com & more — StackPicks — StackPicks