Hello all,
It is surprising to see how many such frameworks are available. I'd suggest that we create a wiki page that briefly describes them, and points to instructions for downloading and examples.
Such a page exists (I had the same thought as Erik and noticed the page, from its creation date it stems from last year's ET workshop in Stockholm, kudos to Ian Hinder who created it): https://docs.einsteintoolkit.org/et-docs/Analysis_and_post-processing
Yours, Roland