Not a mock terminal — a real x86-64 Linux kernel and userspace, emulated with WebAssembly and restored from a pre-booted snapshot. Nothing to install, nothing to sign up for.
Starts from a snapshot of an already-booted system, so you land at a live shell in seconds — not a cold boot.
A genuine kernel and Ubuntu userspace. apt, bash, Python, real filesystem — do Linux things, for real.
Everything runs in your browser. Networking stays off until you flip it on — nothing leaves your machine unless you say so.
Give an instance a name and it keeps its whole disk between visits — installed packages and files come back exactly as you left them.
Turn on real internet per instance — DNS, TCP, HTTPS — when you need to fetch or install something. Off by default, one toggle away.
Spin up as many little machines as you like — a scratchpad, a project box, something to break — each independent, each yours.
The emulator and a pre-booted Ubuntu snapshot stream in and start restoring immediately.
Seconds later you're at a live root@ubuntu-wasm prompt — a real Linux session.
Run commands, edit files, optionally go online. Name the instance and it all persists for next time.
No account, no download, no VM to configure. Just a real Ubuntu machine, one click away.
Launch UbuntuNo ads, no account, no upsell. If it saved you a VM setup — or just made you grin — back it on Patreon and keep the machines humming.
Support on Patreon