e2ee-chat

Light QX Protocol is as lightweight E2EE irc-like network for private messaging.

Layered E2EE group-messaging protocol stack built on MLS (RFC 9420). Includes GBP base layer, GTP/GAP/GSP sub-protocols, SFrame media encryption, and cross-platform bindings for Rust, .NET, Node.js and Python.

A Zero-Knowledge E2EE Messenger

xteam IM - 企业即时通信与办公聊天平台，包含团队空间、实时消息、同步功能和跨平台客户端。Enterprise instant-messaging and office chat platform with team spaces, real-time messaging, synchronization and cross-platform clients

Self-hosted E2EE messenger stack with web client, API, encrypted chats, groups, files, WebRTC calls and SFU.

Sovereign messaging: end-to-end encrypted, serverless, and functional on & off the grid.

A purely Python, End-to-End Encrypted (E2EE) chat system. Features ECDH key exchange, AES-GCM encryption, and forward secrecy.

The self-hosted, decentralized data node for Normsar Sovereign Messaging. Deploy your own Silo to achieve true data sovereignty and connect securely to the Normsar Hub.

ThunderLight — приватный мессенджер со сквозным шифрованием (E2EE). Исходный код безопасного клиента

veilanon — Privacy-First, High-Performance Open-Source Desktop Communication Platform (E2EE Discord Alternative)

Artos E2EE Messenger

A trustless, anonymous E2EE messenger written in Rust. Security by inability, not by good faith.

CIND3R3LLA is the central intelligence of a growing suite of AI bots for the Matrix & SimpleX network. Her first capability is a consent-first archive for public SimpleX communities: the goal is to turn the fleeting stream of a public group into a permanent, searchable, web-findable knowledge base.

SRIFT - Secure P2P File Transfer, Encrypted Chat & Communication | Decentralized & Military-Grade Encryption | For Humans & AI Agents / MCPs.

SylvaCrypt [Formerly ShadowCrypt]: E2E Encrypted Messaging Platform with Zero-Knowledge Relays.

An end-to-end encrypted messenger: Swift clients for iOS and macOS on a Cloudflare Workers backend

A sovereign, zero-knowledge private communication platform for couples. Features Signal-grade E2EE, WebRTC calls, and a self-hosted backend.

A high-performance, containerized, real-time chat application modernized with zero-knowledge End-to-End Encryption (E2EE), offline-first local caching, scalable WebSocket architecture, and active spam protection.

Anonymous, end-to-end encrypted chat. No accounts, no phone number, ephemeral by design.

Tor Chat is built so anyone can stand up their own private chat on the Tor network — no cloud account, no clearnet bind. Guests open your .onion in Tor Browser; messages are encrypted in the browser with WebCrypto before they reach the host, so ChatServer is only a blind SignalR relay that stores ciphertext.