Hello,

congratulations to the release team for the new version of the Einstein Toolkit!

Looking forward, I would like to propose the inclusion of kuibit in the Einstein Toolkit.

kuibit is a Python package for post-processing simulations. The tool comes with 
several features for analysis and visualization. For some of the most common
operations (e.g., 2D plot of a grid variable, extraction of gravitational waves, ...),
users can directly obtain the result without writing any code. The number of such
ready-made scripts grows with every release of kuibit. For everything else, kuibit 
has a large number of features (https://sbozzolo.github.io/kuibit/features.html)
that can be used in scripts or notebooks. 

kuibit is designed to be user-friendly: it has rich documentation (https://sbozzolo.github.io/kuibit/),
examples ready to be used, and tutorials. kuibit is also designed to be developer- and 
maintainer- friendly: it is thoroughly commented, and it implements several continuous 
integration pipelines to test, document, and publish the package automatically.
The high quality of kuibit is also recognized by its publication in the Journal of
Open Source Software (https://joss.theoj.org/papers/10.21105/joss.03099).

kuibit is largely inspired by Wolfgang Kastaun's PyCactus. kuibit shares the same
overall design with PyCactus, and in some cases, the implementation details too. 
kuibit would not exist without PyCactus.

As far as I know, 5-10 people are actively using kuibit as their main tool to interface
with the output of simulations. The feedback I got is overwhelmingly positive: 
users that are new to the Einstein Toolkit praise the simplicity of use and the comfort
of working in Python; experienced users claim that kuibit allows them to focus on 
the science instead of the technical details.

The next release of the Einstein Toolkit is far in the future, so there is time to incorporate
any feedback/suggestion that the community might have. I will be happy to work towards
the goal of including kuibit in the Einstein Toolkit.

kuibit repo: https://github.com/Sbozzolo/kuibit

Best,
Gabriele