Lemmy
Lemmy is a self-hosted social link aggregation and discussion platform. It is completely free and open, and not controlled by any company. Learn more at join-lemmy.org
Matrix
Matrix is an open network for secure, decentralised communication. Think like WhatsApp, Telegram, Signal – but open source and decentralized.
Learn more at matrix.org or create an account to join the conversation.
In case you are still too attached to the antiquated “front page of the Internet”