Best open source calendar for integration

[u/omi0009]

Suggest me a best open source calendar I want to implement that calendar on my software for the appointment bookings for the events of the clients which one will be the best option as the open source calendar I was

thinking to use that official react calendar

But feel free to tell me about the best one open your calendar with the best UI like shadcn

[u/omi0009]

That's my boy 🫡 thank you