Whenever I work with English-speaking patients I’m amazed that psychological assessment tools are generally open access. This is a big contrast to the German-speaking clinical world, where you have per-test fees for many widely used scales. I can recommend this website for a wide range of assessment tools: https://www.psychologytools.com/download-scales-and-measures/
And this one for trauma assessment: https://istss.org/clinical-resources
Precedents like the German government running a Mastodon server are important beyond the obvious reasons. They reinforce the urgency of serious public funding for open code.
If we treated open code as part of the essential infrastructure of the 21st century and funded it at billions of USD/EUR as opposed to tiny grants here and there, the "fediverse" model of interconnected, self-governing communities would become the norm, not the exception.
See also (but not only): https://publiccode.eu/
The Mastodon momentum is remarkable and I think it can work very well, not as a full replacement for what Twitter has become but for certain communities and uses.
But even then, let me emphasize: learning from the past, resources, governance and accountability are no bad things.