I’m pretty comitted to using open source software, so there’s nothing to license.
The complete list of expenses for the project as of now are:
Hosting for forums.
Hosting for Jenkins build (this is donated by @Narc0tiq, i would be interested in covering his costs if donors were ok with it).
The cataclysmdda.org domain, this is only like $15 a year.
Compute resources I use for building and testing, about $40 a month.