Which are the best Secure Instant Messaging Apps for 2021? We will discuss Signal, XMPP (Jabber), Matrix.Org (Element), Briar, Threema, Session, and compare them to Whatsapp. We will cover only those apps that are open source, support both 2-part and group End-to-End Encryption (E2EE).
After discussing the various merits and demerits of each platform, I will present a list of 3 standout platforms and I will explain why they stand out among the pack.
-- Correction on Video: Apparently Signal has a desktop app, though it requires the Phone app first. But I wasn't aware of this previously. Still recommended!