About Matrix Matrix is an open protocol for decentralised, secure communications.
Matrix Manifesto We believe:
People should have full control over their own communication. People should not be locked into centralised communication silos, but instead be free to pick who they choose to host their communication without limiting who they can reach. The ability to converse securely and privately is a basic human right. Communication should be available to everyone as a free and open, unencumbered, standard and global network.
You don’t have to host your own, just join an instance with bridges. That being said, running your own is easy and nice with docker, including the bridges.
Where would be a good starting point to check out a list of instances with these bridges? And how safe are they?