Sfera chat vs X2Chat

Sfera — это безопасный мессенджер на базе протокола Matrix. Он позволяет общаться в зашифрованных чатах, звонить по видео и голосовой связи, делиться файлами и создавать группы без риска слежки.

X2Chat - Secure Messenger Built for Privacy X2Chat is a modern, privacy-first messenger that puts you in control of your data. Every message, file, and call is protected with end-to-end encryption. No one in the middle - not us, not your provider - can read your conversations. END-TO-END ENCRYPTION - RSA-2048 for session key exchange - AES-256-GCM for content (text, files, media) - WebRTC Insertable Streams for calls - true E2E at the RTP-frame level - Trusted-key QR codes - MITM protection from the server itself CALLS FAST AND CLEAR - High-quality 1-on-1 and group audio/video calls - Ultra-low latency through an optimized audio pipeline - Native CallKit integration - lock-screen calls feel like system calls - Adaptive bitrate and resilience on weak networks CLOUD BACKUP WITHOUT COMPROMISE - Encrypted backup secured with your own password - Account restore on a new device via slot_id and password - iCloud Keychain sync for seamless device migration PRIVACY BY DEFAULT - Zero ads, zero tracking - Minimal metadata stored server-side - Open encryption architecture X2Chat fits private conversations, work communications, and everything that should stay strictly between you and your contact.