🔒True end-to-end encrypted (E2EE) chat system in web. 🔒真正的网页端到端加密聊天系统

Anonymous, end-to-end encrypted tip lines and chat for organizations and individuals.

A Messaging Layer Security (RFC 9420, MLS) implementation in TypeScript

Awesome privacy tools: encrypted messaging, anonymous email, VPNs, Tor, password managers, secure file sharing, browser privacy, and self-hosted privacy software.

Spixi is a decentralized, post-quantum secure communications super-app with messaging, calls, file sharing, a crypto wallet, and Mini Apps. Users hold their own keys, self-authenticate cryptographically, and enjoy true end-to-end encryption with no central servers.

Free, open-source C#/.NET toolkit for secure encrypted message and file sharing over the web using public-key infrastructure (RSA, AES-256, SHA-256). Includes CryptoPad and OneTimePad utilities.

Strong Encryption, Exactly-Once Semantics, and Built-In Key Management for Trusted Brokers

NextPGP is a elegant and powerful, modern online PGP tool built with Next.js. It can generate keys, manage keyrings, encrypt and decrypt messages securely and effortlessly.

True peer-to-peer encrypted chat where messages vanish like ghosts. No servers, no storage, no accounts. Messages travel directly via WebRTC and exist only in memory. Self-destructing messages, panic button, file sharing, and zero tracking. Open source privacy-first messaging.

This is a client-server app in C++ that encrypts messages using ChaCha20-Poly1305 and uses X25519 for secure key exchange. It supports bidirectional TCP communication and configuration via XML.

Self-hosted, end-to-end encrypted messenger. A privacy-first alternative to Telegram, Signal, WhatsApp & Discord.

End-to-end encrypted chat for iOS/macOS with Curve25519 key agreement, AES-256-GCM, voice messages, polls, and reactions.

Off The Record Chat Termux IRC / XMPP client with post-quantum OTRv4 (aes256gcm, DH double ratchet) Rust core: ML-KEM-1024 brace key rotation, ML-DSA-87 hybrid auth, Ed448 ring signatures, double ratchet, hybrid PQC SMP (ML-KEM-1024 + ML-DSA-87 per-step signatures + ZKP). ZeroizeOnDrop on all secrets. Zero traces on exit.

Encrypted messaging protocol for secure server-routed communication.

A Python-based tool for encrypting and decrypting messages using the cryptography library's Fernet method. The program features a simple command-line interface and automatic secret key generation for secure data protection.

A secure, anonymous, and decentralized messaging app using the Tor network. No registration, no personal information required. Perfect for privacy enthusiasts.

Swift library for DIDComm V2 protocol with message encryption/decryption, signing, DID authentication, and advanced routing for secure, decentralized communication.

Golang implementation of GlobalPlatform SCP03

Æthernet C++ SDK for secure, low-latency IoT messaging over unstable networks. Supports ESP32, ESP-IDF, PlatformIO, CMake, LTE-M, NB-IoT and LoRa

It is a simple local tool for testing end-to-end encryption (E2EE) between two parties