@eliseo01 @mistergibson @Savvyhomestead The mobile signal client is not free software - you cannot compile a working binary without authentication keys that the signal developers refuse to provide to f-droid for example.

It's only if you customize the server and client to no longer be signal, that you can actually compile it and it'll work, but you may as well use better chat software at that stage.

There is also a (somewhat broken) CLI library, but you can't use it without passing a "captcha" that requires a phone number and running proprietary JavaScript, so that's clearly not free either.