Cal.com is a self-hosted open-source appointment scheduling application. It is an alternative to Calendly and allows you to efficiently schedule meetings, appointments, and link external services such as Google Calendar, Zoom through a simple to use web dashboard. In this guide, you will install self-hosted Cal.com on a Ubuntu 20.04 server. * [Deploy a Ubuntu 20.04 server on Vultr.](https://www.vultr.com/servers/ubuntu/) * [Setup a subdomain to the server.](https://docs.vultr.com/introduction-to......