Mastodon

Mastodon is a social media platform created by German developer Eugen Rochko and maintained by a non-profit based in Germany. Unlike centralized platforms like Twitter/X, Mastodon is part of the "Fediverse" — a collection of independently operated servers that communicate with each other. This decentralized approach allows users to choose or even host their own communities, offering greater control over data, content moderation, and privacy. It has gained popularity for its ethical stance on data privacy, lack of advertising, and its open-source nature.