Sandboxed execution now live — 30+ languages
Collaborative code editor with live cursors, stream chat, and sandboxed multi-language execution. Built for teams who ship fast.
0 onlinecollaborators
room.js● Live
1
● Connected3 onlinePython 3.11
0K+
Developers
0K+
Rooms Created
0+
Languages
0.9%
Uptime
Everything you needNo fluff.
No fluff.
Just the tools.
01
Instant Rooms
One click. One link. Your teammate is in the same editor, no installs, no accounts needed on their end.
02
Live Cursors
Every collaborator's cursor moves in real time. Named, colored, silky at 60fps. You see exactly what they're typing.
03
Stream Chat
Chat is baked into the IDE panel. Discuss the code while staring at it. No Slack, no Discord, no context switch.
04
Sandboxed Run
Docker-isolated execution. Python, JS, Go, Rust — run anything, break nothing. Output appears in under 200ms.
05
Monaco Core
The VS Code engine. Full IntelliSense, multi-cursor, 30+ language syntax, all running in the browser.
06
Local Folder Sync
Link your disk to the browser with the File System Access API. Edit locally and remotely simultaneously.
Live Collaboration
Every cursor.
Every keystroke.
In sync.
Sub-50ms latency. Named cursors. Selection highlights. You always know where your teammate is and what they're changing — in real time, at 60fps.
Start a shared room →import { CollabRoom } from "aether"
const room = await CollabRoom.create({
● Alice lang: "python", cursors: true
● Bob sandbox: true
});
// 3 collaborators · all changes synced
Secure Execution
Write it.
Run it.
Right here.
Fully isolated Docker containers per execution. Python, Go, Rust, JS, Java — spin up any runtime with zero local setup. Output in under 200ms.
Try the sandbox →def fib(n):
if n <= 1: return n
return fib(n-1) + fib(n-2)
print([fib(i) for i in range(10)])
▸ OUTPUT
[0, 1, 1, 2, 3, 5, 8, 13, 21, 34]
∞
Ready when you are
Free to start. No credit card. No install. Open a room and send your team the link — they're coding with you in 10 seconds.