Major Project
Web Development
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Web Development · Major Project
Real-Time Collaborative Code Editor
Multiplayer editing with CRDTs, live cursors and sandboxed execution
4 weeks build
Overview
A Google-Docs-style editor for code. Multiple users type in the same file with live cursors and presence, conflicts resolve automatically through a CRDT, and each room can compile and run code inside a sandboxed container with strict resource limits.
What makes it stand up
- 01Conflict-free collaborative editing built on Yjs
- 02Presence, live cursors and per-user selection colours
- 03Sandboxed multi-language execution with CPU and memory caps
- 04Room permissions, invite links and session replay
- 05Monaco editor with language-server autocomplete
Module breakdown
- 01
Sync layer
WebSocket provider, awareness protocol and offline reconciliation.
- 02
Editor shell
Monaco integration, themes, file tree and tabs.
- 03
Execution service
Docker runner with timeouts, stdin piping and streamed output.
- 04
Auth and rooms
Session auth, role-based room access and shareable links.
- 05
Observability
Latency traces and reconnection handling.
After this, you will be able to
- Articulate why CRDTs beat operational transforms here
- Demonstrate safe untrusted code execution
- Discuss real-time scaling and back-pressure
Technology stack
- Next.js
- TypeScript
- Yjs
- WebSockets
- Docker
- Redis
- Level
- Major Project
- Domain
- Web Development
- Build time
- 4 weeks
- Difficulty
- Rating
- 4.8 / 5 · 168
You receive
- Complete, commented source code
- 60-90 page project report (IEEE format)
- Editable presentation deck
- Architecture, ER and UML diagrams
- Local setup and deployment guide
- Sample dataset or seed data
- Viva question bank with answers
- One 45-minute walkthrough call
- 30 days of doubt-clearing support