Are there any fediverse or self-hostable sort of platforms made for mutual aid? Ideally with some sort of inventory system?

I’m looking to set up a one person super efficient “farm” to be the hub of a mutual aid network (it’s going to take a while to ramp up but I intend to support everyone I can as soon as I can, as long as they are worth supporting.. oooh sorry conservatives 6x prices for you..). I’m looking for a self-host able or fedi platforms, that maybe I can link to nearby mutual aid cells, perhaps. Or get them to join by mouthy-words?