Free open-source calendar availability picker Calendly alternative
Description
A free, open-source alternative to Calendly for sharing your calendar availability. Built with React, TypeScript, Shadcn/UI and Vite. Connects to your Google Apps Script backend so your data stays on your own Google account. No paid plans, no feature walls just a clean booking page you can share.
Cal.com is the open-source scheduling infrastructure. Create booking pages, round-robin routing, team scheduling, and workflows. Self-host for free or use the managed platform. API-first with 100+ integrations.