Cal.com

Send one link, let clients book you. Cal.com covers the Calendly playbook — availability windows, buffers, time-zone magic, Zoom/Meet links, payment collection via Stripe for paid consults — but it's open source, and the free individual plan has no meeting-type limit. Discovery calls, weekly check-ins and paid consultations all fit on the free tier.

The 'when works for you?' email thread dies here. Unlimited event types free — where Calendly charges — plus the option to self-host makes it the best value scheduler for solo work.

Every place Cal.com shows up across Choose My Stack — the research it’s part of and the articles that cover it.

The honest list