Pleroma is a free, federated micro-blogging social networking server built on open protocols. It is compatible with GNU Social, Mastodon, and many other ActivityPub implementations. The project consists of several components: Pleroma is the server implementation, and comes bundled with PleromaFE, the default frontend. Other useful utilities are also provided, such as an ActivityPub relay.
pleroma.social will not work without centralized DNS.
It will work without central servers.
User accounts are not in the user's control. They're controlled by the service provider. An uncensorable and unstoppable monetization system is NOT supported.