Cal.com
The open-source Calendly. Self-host it, own your data, or use the hosted version, and the individual plan is genuinely free forever.
- Use when
- You want to own your scheduling stack, avoid per-seat lock-in, or just want a free tier that doesn't cripple you at one event type.
- Skip when
- You don't want to touch infrastructure and the hosted free tier already covers you, then it's just a nicer Calendly, which is fine.