Cal.comLet people book appointments from your availability and connected calendars.
Individuals plan free forever for 1 user (Cal.com branding); teams $12/user/month.
Scheduling
Free alternatives to Calendly
Find a free app for the parts of Calendly you actually use.
Compare the free allowance and limitations on each app’s page. These are workflow alternatives, rather than identical copies.
Free options
Suggest an alternative →Cal.com
Easy!AppointmentsOffer appointment booking and manage availability on your own server.
Free and open source (GPL-3.0 licence per GitHub).