Always present.
Never in the way.
Sumn is a lightweight Windows application that lives on your desktop. It's there when your team needs it. Out of the way when they don't.
Five steps. A few minutes.
Download and installSumn installs like any Windows application. No IT department, no complex configuration, no server setup. Run the installer and you're most of the way there.
Enter your licence codeAfter signing up, you'll receive a licence code by email — good for 30 days on a trial. Enter it once during setup and Sumn is activated across your site.
It finds your team automaticallySumn communicates directly with other Sumn-enabled devices on your network. No pairing, no manual connections. Install it on each computer and they find each other.
It sits on your desktop, readySumn runs as a transparent overlay — always visible on screen, never covering your work. Your team knows it's there. That's the point.
Someone needs the team. They click.One click sends an instant alert to every Sumn device on the network. Colleagues are notified immediately. Someone responds.
What makes it work.
| Windows desktop app | Installs simply, runs reliably in the background |
| Transparent overlay | Always on screen — always reachable |
| Network-based alerts | Communicates directly with other devices on your local network |
| Automatic discovery | Sumn-enabled computers find each other — no manual setup |
| Instant notifications | Real-time alerts the moment someone clicks |
| One licence code | Enter it once, covers your whole site |
| Flat site pricing | $500 per site, every computer covered |