Cal.com
A self-hosted Scheduling & Productivity app you can run on your own server.
Cal.com is an open, self-hosted productivity application — you install it on your own hardware and keep full control of your data. Running it yourself keeps the data on your own network and lets you back it up however you like.
Development happens in the open on GitHub; the repository has collected 48.4K stars so far. Repository activity was last recorded on Sep 12, 2026, and the project is classed as actively maintained in our snapshot.
Before you switch
Productivity tools work when they reduce friction. Connect one calendar or workflow, run it for two weeks, and resist migrating everything at once. Self-hosted options keep your schedule and tasks private and exportable.
Like every project listed on SelfHosted, Cal.com is developed in the open — you can read the code, follow development, and even contribute. Check the system requirements and the project’s own documentation linked on this page before installing.