Hi.
There is a new program "kalendar" in the stable repository of neon.
But it does not start with no error Message. My neon is up to date
In a konsole, there is no more information.

l could imagine that it needs to install a dependency to launch. I would like to avoid install kontact and all the dependencies

Has anyone managed to use it?

If you don't have Kdepim (Kontact) installed, try installing the package kdepim-runtime, and restart the akonadi database via akonadictl restart.
Seems these bits are missing.

Thanks a lot. It was the solution.
Kalendar is very nice. Happy to try it.