NEXT HMI
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Open source · AGPL-3.0-or-later Self-hosted OPC-UA Runs in any browser

Your plant deserves better than a panel from 2009.

NEXT HMI replaces proprietary HMI/SCADA panels with one self-hosted server: your PLCs on OPC-UA in, live operator screens in any browser out. Built for the people who run plants, integrate lines and ship machines.

Try now See what it does
A portable zip runs on Windows and macOS, no install required · read the documentation
The NEXT HMI operator runtime on a laptop: the Aquavane filling-line dashboard with a navigation sidebar, a five-tile KPI strip reading throughput, OEE, fill accuracy, good count and CO2 per 100 bottles, an OEE breakdown ring at 89.2 percent, live batch progress at 70 percent, the line flow from mix tank to palletizer with the labeler flagged, and two active alarms.
The same dashboard on a phone: a hamburger button, a Running pill, two KPI tiles, and the line performance, active batch and line flow cards stacked one per row.
What changes for you

Three things you stop working around.

Licences

TodayEvery extra panel, runtime or tag bundle is another line on the quote.

Add a screen by opening a browser.

In your own plant nothing is counted: not screens, not tags, not users.

Engineering

TodayOne workstation with the right vendor software, the right version and a dongle.

Edit from any laptop on the network.

The editor runs in the browser, on the same server as the runtime. Nothing to install, no seat to licence.

Change control

TodayA binary project file that only one version of one tool can open.

Plain files your team already reviews.

Pages, alarms and translations are JSON and CSV. Diff them, review them and roll them back in Git.

What it costs

Free in your own plant. Paid once when it ships with your machine.

In your own plant €0 forever

Any number of screens, servers and sites.

  • Historian, alarms, recipes, users and permissions
  • No key, nothing to activate
  • Open source under AGPL-3.0-or-later
Shipped with your machine €149 per device, once

For machine builders and integrators who deliver NEXT HMI to a customer.

  • Your own branding on the boot screen
  • No obligation to hand over source code
  • Perpetual: no renewal, no expiry
  • €125 per device from the 101st in a year

Shipping it under the open licence, source included, stays €0. The audit trail for regulated plants is a separate add-on at €99 per installation. Full pricing →

What's in it

The full product, in the free build.

No feature tiers to compare. What you evaluate is what you run.

All features →
The page editor with a filling line open: the page tree on the left, the canvas showing live throughput, OEE and station readings, and the property panel with each field bound to a tag.
Editor

Live data while editing

Bind a widget to an OPC-UA tag and the live value shows on the canvas before you close the picker. No compile, no download to the panel, no simulation.

Live data while editing →
An alarm dialog: Cap torque out of range, with a plain-language explanation and three numbered resolution steps.
Alarms

Alarms that explain themselves

A severity, the cause in plain language and the steps to resolve it, so the night shift knows what to do.

Alarms →
The trends page: four recorded tags on the left and a line chart of fill rate over the last hour.
Historian

History and trends

Log any tag with its own interval and retention, and chart it next to the live value.

Historian →
The same dashboard on a laptop, a tablet and a phone, each laid out for its own screen.
Responsive

One project, every screen size

The panel PC, the tablet on the shop floor and the phone in your pocket, from the same pages.

Responsive →
The widget catalog: custom widgets such as AlarmStrip, Conveyor and TankLevel listed next to the built-in components.
Extend

Your own widgets

Missing a symbol or a control? Write it in React and it sits next to the built-ins, without touching the core.

Extend →
AI assistant

AI that shows its work

An AI assistant can build pages alongside you through the built-in MCP server. Every destructive change is shown to you as a diff first.

MCP →
Who it's for

Pick the one that sounds like you.

Three kinds of teams use NEXT HMI, and each starts with a different question.

Plants & maintenance

I run a plant

Modern screens on the machines you already have.

  • Talks OPC-UA to the PLCs already on your network
  • Free at any scale inside your own plant
  • Start on one line, next to what runs today
See a real project Why a browser HMI holds up
System integrators

I integrate

The same toolset on every job.

  • One way of working for every customer on OPC-UA
  • Projects are plain files: template, copy and review them
  • Help with implementation, custom widgets or a prototype
How we can help Example projects
Machine builders & OEMs

I build and ship machines

Your own branded HMI with every machine.

  • €149 per device, once: no renewal, no expiry
  • Your branding on the boot screen
  • Your customer inherits no source-code obligation
See pricing AGPL and the machine you sell
See for yourself

Try it out.

Portable zip, Docker, or from source, and a real demo project to open instead of a blank screen. Nothing to request, no quote to wait for.

Try now →
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