I prefer Telegram's web UI over Whatsapp's Web UI.
Telegram's web UI seem lighter.<p>But I suspect whatsapp has shared encryption keys with state actors.<p>Are there any opensource p2p encrypted messenger?
Use Signal Private Messenger if you want something that is open source, audited and well trusted. Alternatively, Briar is an option, though it is not as polished and has a different feature set.
ring.cx<p>Ring is a free and universal communication platform which preserves the users' privacy and freedoms.<p><pre><code> Official GNU package
Released under GPLv3 licence
Supported by an active community
OpenDHT protocol
Decentralized communication
Peer-to-peer discovery and connection
End-to-end encryption with authentification
Identity managed by X.509 certificates
Based on RSA/AES/DTLS/SRTP technologies</code></pre>