What's the difference between Diataxis and the Divio documentation framework? https://documentation.divio.com/
But according to the network graph on GitHub, Diataxis seems to be more active, although both of them still receive updates.
divio/diataxis-documentation-framework is forked from evildmp/diataxis-documentation-framework, and evildmp is Daniele Procida, the creator of the latter repository and the maintainer of diataxis.fr.