  We provide a library of participatory budgeting data (Pabulib) and open
source tools (Pabutools and Pabustats) for analysing this data. We analyse how
the results of participatory budgeting elections would change if a different
selection rule was applied. We provide evidence that the outcomes of the Method
of Equal Shares would be considerably fairer than those of the Utilitarian
Greedy rule that is currently in use. We also show that the division of the
projects into districts and/or categories can in many cases be avoided when
using proportional rules. We find that this would increase the overall utility
of the voters.
