Kaicode

Realtime Peer Programming Playground

Collaborative IDEReal-time EditingCode Execution

Try Demo

Live collaborative coding

Frontend Code

Next.js frontend repository

Backend Code

Golang backend repository

Software Design

Architecture & components

System Design

Scalable infrastructure

Project Overview

🏗️ Multi-Repository Architecture

Kaicode consists of two separate repositories: frontend (Next.js) and backend (Go). Installation and setup instructions are available in each repository's README.

KaiCode is a realtime peer programming playground that enables collaborative coding with real-time cursor sharing and synchronized editing. Built for developers who want to code together seamlessly, it provides a complete IDE experience in the browser.

The platform features collaborative editing via Gorilla WebSockets and Y.js CRDT, failsafe containerized sandbox code execution, and AI-powered inline ghost completions using DeepSeek LLM API. All code execution happens in secure Docker containers managed through AWS SQS queues.

Technology Stack

Frontend

  • Next.js with TypeScript
  • Y.js for CRDT operations
  • Multi-cursor support
  • Real-time collaborative editing

Backend

  • Golang backend services
  • Gorilla WebSockets
  • PostgreSQL with Drizzle ORM
  • Redis for session management

AI & Code Execution

  • DeepSeek LLM API
  • Inline ghost completions
  • Docker execution containers
  • Custom Docker client (Golang)

Infrastructure

  • AWS Lambda & EC2
  • AWS SQS for queue management
  • Docker containerization
  • Failsafe sandbox execution

Key Features

Real-time Collaborative Editing

Built with Gorilla WebSockets and Y.js CRDT for seamless real-time cursor sharing and synchronized editing across multiple users.

AI-Powered Code Completions

Inline ghost completions powered by DeepSeek LLM API providing intelligent code suggestions as you type.

Secure Code Execution

Failsafe containerized sandbox execution using custom Docker containers managed through AWS SQS queues for secure code running.

Multi-Cursor Support

See where your collaborators are editing in real-time with synchronized cursors and selection highlighting.

Source Code

Frontend Repository

Next.js frontend with TypeScript, Y.js CRDT, and real-time collaboration

TypeScript

Backend Repository

Go backend with WebSockets, Docker execution, and AI integration

Go

Demo Video

Real-time Collaboration Demo

Live Coding & Execution

Watch multiple developers collaborate in real-time with secure code execution in Docker containers.

Technical Documentation

Software Design Document

Detailed architecture, component design, and implementation patterns

System Design Document

High-level system architecture, scalability, and infrastructure design

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