From the description of this repo:

OpenCal is a web-based open-source software designed to make online appointment scheduling effortless and efficient. Whether you're managing a team or running a business, OpenCal takes the hassle out of coordinating appointments, eliminating the need for endless back-and-forth emails. With OpenCal, you can streamline communication, save time, and focus on what really matters.

I agree! Though, I think the OP is a bot judging by it's post history, despite not marking itself as one.