I take the occasion to say that I helped making/rewriting a comparison between various agent-based modelling software at https://github.com/JuliaDynamics/ABMFrameworksComparison, not sure if this correctly represents all of them fairly enough, but if anyone wants to chime in to improve the code of any of the frameworks involved, I would be really happy to accept any improvement

SeanLuke, I tried to fix an issue about Mason I opened when I was looking into this a while back two years ago and tried to notify people about that (https://github.com/JuliaDynamics/ABMFrameworksComparison/iss...) with https://github.com/JuliaDynamics/ABMFrameworksComparison/pul..., hopefully the methodology is correct, I know very little about Java...In general, I don't think there is any very good comparison on performance in this field unfortunately at the moment, though if someone is interested in trying to make a correct one, I will be happy to contribute