Mangrove
A place to build the things a group needs and share them — a household budget, a shared list of chores, everything a company runs on. They run on the computers the group already owns.
An app needs somewhere to keep information, something to do the work, and a way to reach people. All three have meant somebody else's computers, which is why anything worth sharing has had to be rented. Mangrove spreads all three across the machines a group already has, so what people build together stays theirs.