The open-source notification Inbox infrastructure. E-mail, SMS, Push and Slack Integrations.

An open-source screen recorder built with web technology

Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)

Solid - Re-decentralizing the web (project directory)

Transmits AM radio on computers without radio transmitting hardware.

MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker). The implementation is based on the documentation from http://mqtt.org/.

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

OptiKey - Full computer control and speech with your eyes

🛡 I2P: End-to-End encrypted and anonymous Internet

Infrared remote library for ESP8266/ESP32: send and receive infrared signals with multiple protocols. Based on: https://github.com/shirriff/Arduino-IRremote/

Build your own chat UI with React components in few minutes. Chat UI Kit from chatscope is an open source UI toolkit for developing web chat applications.

Modern email for teams and professionals. A replacement for outdated email technology and tools. Alt to hey.com, front.com, missiveapp.com

RFSec-ToolKit is a collection of Radio Frequency Communication Protocol Hacktools.无线通信协议相关的工具集，可借助SDR硬件+相关工具对无线通信进行研究。Collect with ♥ by HackSmith

🔮 Secure direct video group chat

Mezon is a new way to communicate with your team. It's faster, better organized, better for WFH.

Linux Library for low speed IO Communication in C with bindings for C++, Python, Node.js & Java. Supports generic io platforms, as well as Intel Edison, Intel Joule, Raspberry Pi and many more.

AgentNetworkProtocol(ANP) is an open source protocol for agent communication. Our vision is to define how agents connect with each other, building an open, secure, and efficient collaboration network for billions of intelligent agents.

CodeChat - WhatsApp Api

Web application synchronization between different tabs

Create multiple TOR instances with a load-balancing.

A publish/subscribe EventBus optimized for iOS

Instant, disposable, single-binary web based live chat server. Go + VueJS.

Zulip Desktop client for Mac, Windows and Linux.

CSerialPort - lightweight cross-platform serial port library and protocol parsing for C++/C/C#/Java/Python/Node.js/Electron/Rust

playSMS is a web interface for SMS gateways and bulk SMS services

Efficient, lock-free, bounded Rust broadcast channel

🦘 The Grouparoo Monorepo - open source customer data sync framework

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

Augmentative and Alternative Communication (AAC) system with text-to-speech for the browser

📱😀 Video & audio calls through Nextcloud on Android