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Calendars

A modern, open-source calendar application for managing events and schedules.

Why use Calendars ❓

Calendars empowers teams to manage events and schedules while maintaining full control over their data through a user-friendly, open-source platform.

Manage Events

• 📅 Create and manage events and schedules
• 🌐 Access your calendar from anywhere with our web-based interface

Organize

• 📂 Organized calendar structure with intuitive navigation

Collaborate

• 🤝 Share calendars with your team members
• 👥 Granular access control to ensure your information is secure and only shared with the right people
• 🏢 Create workspaces to organize team collaboration

Self-host

• 🚀 Easy to install, scalable and secure calendar solution

Getting started 🔧

Prerequisite

Make sure you have a recent version of Docker and Docker Compose installed on your laptop:

$ docker -v
  Docker version 27.x

$ docker compose version
  Docker Compose version v2.x

⚠️ You may need to run the following commands with sudo but this can be avoided by assigning your user to the docker group.

Bootstrap project

The easiest way to start working on the project is to use GNU Make:

$ make bootstrap

This command builds the containers, installs dependencies, and runs database migrations. It's a good idea to use this command each time you are pulling code from the project repository to avoid dependency-related or migration-related issues.

Your Docker services should now be up and running! 🎉

You can access the project by going to http://localhost:8930.

You will be prompted to log in. The following test users are pre-configured in Keycloak (password = username prefix):

Email	Password	Org domain
user1@example.local	user1	example.local
user2@example.local	user2	example.local
user3@example.local	user3	example.local
user1.2@example2.local	user1.2	example2.local
user2.2@example2.local	user2.2	example2.local

Users sharing the same domain are placed in the same organization automatically on first login. Use users from different domains (example.local vs example2.local) to test cross-org isolation.

Note that if you need to run them afterward, you can use the eponym Make rule:

$ make start

You can check all available Make rules using:

$ make help

⚠️ For frontend developers, it is often better to run the frontend in development mode locally.

First, install the frontend dependencies:

$ make install-front

Then start the backend services:

$ make start-back

And run the frontend locally in development mode:

$ cd src/frontend/apps/calendars && npm run dev

Django admin

You can access the Django admin site at http://localhost:8931/admin.

You first need to create a superuser account:

$ make superuser

You can then login with sub admin@example.com and password admin.

Feedback 🙋‍♂️🙋‍♀️

We'd love to hear your thoughts and hear about your experiments, so come and say hi on Matrix.

Contributing 🙌

This project is intended to be community-driven, so please, do not hesitate to get in touch if you have any question related to our implementation or design decisions.

License 📝

This work is released under the MIT License (see LICENSE).

While Calendars is a public driven initiative our licence choice is an invitation for private sector actors to use, sell and contribute to the project.

Credits ❤️

Calendars is built on top of Django REST Framework, Next.js and SabreDAV. We thank the contributors of all these projects for their awesome work!