WhatsApp alternatives that respect privacy
If it doesn't inter-operate, it's not really an alternative.<p>Chrome, Firefox, Edge are all alternative web browsers, you can drop-in replace them when visiting websites. But none of these can be drop-in replaced when talking with your friends who are using WhatsApp.<p>WhatsApp is the de-facto messaging standard throughout South America, Africa, and half of Europe. That's a lot of inertia to overcome.