💬 ChitLAN – Real-Time Collaboration on Your Local Network

Latest Version: v2.0.0 – Real-Time Collaboration Edition

ChitLAN is a lightweight, browser-based peer-to-peer communication platform designed for Local Area Networks (LAN). It combines group messaging, voice chat, live screen sharing, and high-speed file transfers into a single application—all without requiring servers, cloud services, or user accounts.

Built entirely with WebRTC and PeerJS, ChitLAN enables secure, direct communication between devices on the same network.

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✨ Features

💬 Real-Time Chat

• ✅ Peer-to-peer group chat powered by WebRTC (PeerJS)
• 👥 Supports up to 10 users per room
• 💬 Clean left/right message layout
• ⌨️ Live typing indicators
• 🕒 Message timestamps
• 🔔 Notification sounds for new messages
• 📋 One-click Room ID copy
• 💾 Automatic chat history persistence
• 🌙 Dark Mode support
• 📱 Fully responsive design

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🎤 Voice Chat

• 🎙️ Real-time peer-to-peer voice communication
• 🔇 Mute / Unmute microphone
• 🚪 Join or leave voice sessions anytime
• 👥 Live voice participant list
• 🎧 Browser-based audio streaming
• 🎤 Automatic microphone permission handling

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🖥️ Screen Sharing

• Share your screen in real time
• Built-in screen viewer
• One-click start and stop controls
• Automatic notifications when screen sharing begins or ends
• Peer-to-peer streaming using WebRTC

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📁 Advanced File Sharing

• 📤 Direct peer-to-peer file transfer
• 📦 Supports files up to 100 GB
• ⚡ Chunk-based transfer for improved reliability
• 📊 Live transfer progress bars
• 🚀 Transfer speed display
• 🖼️ Image preview inside chat
• 📥 Download links for received files
• ✔️ Automatic transfer completion confirmation
• 🔁 File acknowledgement system

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🌐 Network Features

• 🌍 Automatic Public IP detection
• 🔄 Automatic PeerJS reconnection
• 📡 No server required for messaging or file transfers
• 🏠 Designed for Local Area Networks (LAN)

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📲 Progressive Web App (PWA)

• Install directly from supported browsers
• Works like a native desktop application
• Service Worker support
• GitHub Pages compatible

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🔒 Reliability & Performance

• HTML escaping for secure messages
• Automatic cleanup of media streams
• Improved connection recovery
• Optimized large file transfers
• Duplicate file chunk protection
• Better memory management
• Faster rendering and smoother scrolling

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🌐 Live Demo

🚀 Launch ChitLAN

https://saikishorr.github.io/chitlan/

Note

All participants must be connected to the same Local Area Network (LAN) for peer-to-peer communication.

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📦 Getting Started

Clone the repository

git clone https://github.com/saikishorr/chitlan.git
cd chitlan

Open app.html in your browser or deploy the project using GitHub Pages.

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🛠️ Technology Stack

• HTML5
• CSS3
• JavaScript (ES6)
• WebRTC
• PeerJS
• Service Workers
• MediaDevices API
• Web Audio API

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📜 Version History

Version	Highlights
v2.0.0	🎤 Voice Chat, 🖥️ Screen Sharing, 📁 Advanced File Sharing, 📲 PWA Support, 🌍 Public IP Detection, 💾 Chat History, 🔄 Auto Reconnection
v1.2.1	Fixed IP address detection
v1.2.0	File sharing, image previews, acknowledgements, large file support
v1.1.0	Multi-user support, improved UI, dark mode
v1.0.0	Initial release

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📄 License

This project is licensed under the MIT License.

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🤝 Contributing

Contributions, feature requests, bug reports, and pull requests are always welcome.

If you have ideas to improve ChitLAN, feel free to open an issue or submit a pull request.

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⭐ Support the Project

If you found ChitLAN useful, please consider giving the repository a ⭐ on GitHub.

It helps others discover the project and motivates future development.