Signal is opensource-ish. The fact you can't compile the code and federate with the main Signal network means having some version of source online is mostly mea

Signal is opensource-ish. The fact you can't compile the code and federate with the main Signal network means having some version of source online is mostly meaningless. They proved this when they developed the crypto functionality behind everyone's back with no commits to the public source code for months. Who is to know if they are really running the source code they publish? Matrix is the only one where you can be sure that the source code matches what you are running on both the client and (your) server.