Forces can buy and sell items for credits via buy-boxes and sell-boxes. Also has Land Claim, Specializations and Early Bird Technology.
I'm thinking about to update this mod and also mod "Lawful Evil" and take some code for other purposes. I'll post more info later.
https://www.reddit.com/r/factorio/comments/dgx43d/corporations_or_syndicates/
I contacted to the author. I'll update the mod under license https://creativecommons.org/licenses/by/4.0/ , if the author don't change his mind...
https://github.com/ZwerOxotnik/MultiplayerTrading
Currently, I need more tests for the mod.
I updated: https://mods.factorio.com/mod/m-multiplayertrading
