Hi, I wanna know what is the most secure and best messaging app/platform...
Need an app that is crossplatform and has a very good numbers of features and security.
(And it has to be FLOSS)
I thought about XMPP clients, Signal, Session, IRC clients.. Propose and explain me your choice
SimpleX is libre software and the most decentralised voice chat here.
Briar is libre and the most decentralised but is missing voice chat.
XMPP and Matrix are libre software and federated/decentralised. XMPP servers use far less resources, so creates more decentralisation than Matrix in practice.
Signal is libre and more popular but centralised, acceptable.
Avoid Threema's app which requires a service as a software substitute.
SimpleX doesn't need a phone.
The desktop app can run standalone or linked to the phone-profile (but the phone must stay connected for that).
They also have a CLI version (which you can use as a central hub for your profile).
SimpleX isn't able to share your profile-data between devices. Instead you connect with e.g. the desktop app to the phone to use the phone-profile, but it need to stay online, which can be inconvenient.
With the CLI version you are able to run it on some (private) server and then connect the phone and desktop app to it.
But it is still not really convenient, as you need to establish a tunnel (for example SSH port forwarding) to the server (the clients don't support connecting via internet URL the last time I checked).
I see. I switched from the CLI version to the desktop version when it came out and was considering switching back if it was more convenient than it currently is to use my phone's profile on desktop, but it sounds like it really isn't.