PeerSync — Real-time Collaborative Coding
Code together in real-time, directly inside VS Code. No browser required.
Features
- Real-time code sync — Every keystroke synced instantly using Yjs CRDT (no conflicts, ever)
- Live cursors — See your collaborator's cursor with colored decorations
- Text chat — Built-in sidebar chat while you code
- File sharing — Entire workspace folder shared automatically when a peer joins
- Code execution — Run code and share output with your peers (Python, Node.js, Go, Java, C/C++, Ruby)
- Video & audio calling — WebRTC peer-to-peer calls without leaving VS Code (Pro)
How to Use
Create a Room
- Click the PeerSync icon in the activity bar
- Enter your name and click Create Room
- Share the 6-character room code with your collaborator
Join a Room
- Click the PeerSync icon in the activity bar
- Enter your name and the room code
- Click Join Room — the shared workspace opens automatically
Run Code Together
- Click Run in the sidebar to execute the active file
- Output is streamed live to everyone in the room
Free vs Pro
| Feature |
Free |
Pro |
| Real-time code sync |
✅ |
✅ |
| Live cursors |
✅ |
✅ |
| Text chat |
✅ |
✅ |
| File sharing |
✅ |
✅ |
| Code execution |
✅ |
✅ |
| 2-person rooms |
✅ |
✅ |
| 30-minute sessions |
✅ |
— |
| Video & audio calling |
❌ |
✅ |
| Up to 5-person rooms |
❌ |
✅ |
| Unlimited session time |
❌ |
✅ |
Activate a Pro License
Ctrl+Shift+P → CodeSync: Activate License Key → paste your key
Settings
| Setting |
Description |
codesync.username |
Your display name in rooms |
codesync.serverUrl |
Custom server URL (advanced) |
Tech
Built with Yjs (CRDT), Socket.io, and WebRTC.
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