Nebula Desktop
Install the Nebula desktop app on macOS, Windows, or Linux to keep agents visible while you work, send from anywhere, and give Nebula access to your computer.
The Nebula desktop app gives you everything the web app does, plus a set of things a browser tab can't: a corner view of what your agents are doing, a global shortcut to send from any app, and the ability to let agents work on your own computer.
Download Nebula Desktop — free, for macOS, Windows, and Linux.
What would you like to do?
The window itself is the Nebula you already know. The two things you can't get in a browser are visible here: the Computer Control pill in the header, and the Capsule floating above everything in the corner.
What desktop adds
Desktop runs the same Nebula you already know — same channels, agents, jobs, and settings. What's different is the native shell around it.
Computer Control
Let agents run real work on your own machine, in a folder you choose.
The Capsule
An always-on-top view of live agent activity across every workspace you're in.
Quick Send
A global hotkey that opens a composer over whatever you're doing.
Shortcuts & tray
Hotkeys, the macOS menu bar icon, and thread pop-out windows.
Desktop settings
Settings that belong to this computer rather than your account.
Install it
Head to nebula.gg/download — it hands you the right build for the machine you're on, and it's also where the Nebula CLI and mobile apps live.
A signed, notarized app for both Apple silicon and Intel Macs. Requires macOS 13 or later. Drag it to Applications and open it.
An installer for Windows 10 and later, installed for your user account rather than machine-wide. Windows may show an "unrecognized app" warning on first run — choose More info → Run anyway.
An AppImage, plus a pacman package. On Arch you can install nebula-desktop-bin from the AUR and let your package manager handle updates.
Sign in
Desktop signs in by pairing rather than by password. The app shows you a short code, opens your browser, and waits.
Open the app. It displays a pairing code in the form XXXX-XXXX.
Your browser opens Nebula's activation page. Sign in there if you aren't already.
Confirm the code matches, and approve. The app picks it up on its own and continues.
Codes don't last forever, but running out isn't something you have to handle. If a code expires while you're looking at it, the app quietly fetches a fresh one and shows it in place — and if the window was hidden, it renews the moment you come back to it. Get a fresh code is there if you'd rather force it.
Signing in on desktop also signs in the Nebula command-line tool on the same machine — they share one stored credential.
If Nebula ever drops you back to the sign-in screen on its own, it says why — "Your session expired. Please sign in again." when the stored credential aged out, or a note that it couldn't read the sign-in saved on this device. Either way the fix is the same: pair again.
Staying up to date
Two things update independently, which is worth knowing when a feature appears without you doing anything.
Desktop checks for new versions and tells you — in the tray menu and as a banner in the app — but it doesn't download until you say so. The tray keeps a Check for updates… item at all times, and once there's something to get it turns into the download and then the restart control. If you installed from the AUR, your package manager handles this instead and the app leaves it alone.
The Nebula experience itself refreshes on its own schedule, separately from the app version, and it does so silently — there's nothing to click and no restart. A new bundle takes effect the next time the app reloads, never mid-session, which is why new channel, agent, or call features can show up without a desktop update.
Release notes for the desktop app appear in What's New alongside everything else, so the list always matches the version you actually have installed.
Related
Webhooks
Create webhook triggers for your AI agent with Nebula. Let Zapier, Stripe, GitHub, and other tools send data and trigger automations in real time.
Computer Control
Let Nebula agents work on your own machine — your files, your tools, your network. Choose how long access lasts and how far across the disk it reaches.