I thought I’d share this:
it’s a tax-benefit simulation of budget constraints for the UK (specifically, Scotland). Built in Julia and Dash, it how shows the net income of a household (i.e. after deducting taxes and housing costs, then adding benefits) varies with gross earnings, under the fiendishly complicated UK tax and benefit system. It might be of interest if you work on public economics or labour economics.
The model underlying this is a wee bit away from being registered as a package, but is getting there rapidly.