https://getsession.org/

https://deb.oxen.io/

sudo curl -so /etc/apt/trusted.gpg.d/oxen.gpg https://deb.oxen.io/pub.gpg

echo "deb https://deb.oxen.io $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/oxen.list

sudo apt update

sudo apt install session-desktop

https://getsession.org/faq#onion-routing