Last week @tusker and myself have been busy setting up the infra on RetroShare.
You’ll have to invest time to learn how it works. It is NOT another web app. And it looks ugly. You’ll have no fun and your ego will not be boosted.
BUT IT CANNOT BE TAKEN DOWN…
In that case try Bastyon, decentralized and censorship resistant twitter style platform with mobile app.
https://bastyon.com/applications