Easy to use cryptographic framework for data protection: secure messaging with forward secrecy and secure data storage. Has unified APIs across 14 platforms.

Tinfoil Chat - Onion-routed, endpoint secure messaging system

Threema App for Android.

ADAMANT Decentralized Messenger and Crypto Wallet. Progressive Web Application (PWA) for Web, Tor, Android, macOS, Windows, and Linux.

ADAMANT Javascript API library

Threema App for iOS.

Tox Reference implementation for Android

Real-time P2P messenger using go-ipfs pubsub. TUI. End-to-end encrypted texting & file-sharing. NAT traversal.

A command-line bound implementation of secure synchronous lightweight chatroom with zero logging and total transience built using WebSockets, Fernet Cryptography, Asyncio and Prompt Toolkit

A secure synchronous lightweight chatroom with zero logging and total transience

iGap Client for Android Source Code

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.

iGap Core Messaging offer Open APIs for developers . This API allows you to build your own customized iGap clients.

An alternative official version iGap messenger client

Air-gapped IOTA Accounting System For Governments, Institutions, Individuals, and Machines

Secure chat is flutter based messaging app that would protect your chats anywhere anytime!🔒

Open-source Snapchat alternative. twonly is a privacy-friendly way to connect with friends through secure and instant image sharing.

iGap Client for iOS Source Code

A Chat Application In Pure Python with 256-Bit AES Encryption.

A persistenceless, end-to-end encrypted P2P messenger. No database, no logs, RAM-only architecture.

An android messenger that only needs a username. Also, there's encryption

Collection Softwares & Services For Bypassing Internet Censorship and Protecting Privacy.

🔒 Exo is a secure P2P messaging app that offers features such as 🤝 decentralized P2P messaging, 💾 offline-first storage, and 🔐 end-to-end encryption.

qTox is a chat, voice, video, and file transfer IM client using the encrypted peer-to-peer Tox protocol.

Git-based secure messaging & file Sharing -- all from just a single bash script !! No long-term cloud storage of user data. Fully transparent and semi-decentralized. Text-based UI. Uses free services only...no hosting costs.

SUB ZERO is a secure messaging client that inter-loops across divers networks and encryption frameworks for secure, untraceable communication.

PhoneX Android application, secure messenger application

Git-based secure messaging & file Sharing -- all from just a single bash script !! Download from https://github.com/SomajitDey/JuFF

Open-Source Chat Messenger

PhoneX iOS mobile application, secure messenger