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PhysBox Pro — One Account, Every Surface

The simulators stay free.
Pro levels up your workflow.

A single PhysBox account gives you cloud saves with revision history across Volt, Mesh, Etch and Flux, an archive of every job your machines have run — searchable by material, and readable by your own AI agent — and PhysBox Native, the GPU-accelerated C++20 desktop build of Mesh for Linux and Windows.

Get the Native App What's Included
Linux · Windows · Sign in to download
What Pro Adds

Four things a browser tab cannot do on its own

Everything PhysBox simulates stays open-source and free in the browser. Pro is the account layer around it: your scenes follow you, your machines report back, and your workstation's GPU gets used properly.

01

Cloud Saves

Scenes, netlists, toolpaths and parameter sets are stored against your account rather than the browser profile that happened to make them. Sign in on another machine and the same presets are already in the list — no export step, no ~/Downloads full of near-identical JSON, no losing a lab's worth of tuning to a cleared site-data prompt.

Pro goes further than the presets you remember to save: the document you are working on is auto-saved as you go, with revisions kept behind it. Close the tab mid-thought and it is there when you come back — and if you preferred it how it was an hour ago, that version is still on the list.

  • The open document auto-saves on its own, across Volt, Mesh and Etch.
  • Revision history — roll back to an earlier state, and roll the rollback back.
  • Open on two machines and you are told, rather than one silently overwriting the other.
  • Saves are keyed per app, so a Mesh scene and an Etch job never collide.
  • Local work keeps working offline — the cloud copy reconciles when you sign back in.
  • The same library is visible to the native desktop app.
Your preset library
double_pendulum_chaos.scene
Mesh · synced from workstation
Synced
buck_converter_rev4.netlist
Volt · synced from laptop
Synced
enclosure_fingerjoint.svg
Etch · synced from shop tablet
Synced
Live machine telemetry
Laser — enclosure_panels
line 4,118 / 9,204 · F1200
Running
CNC router — jig_plate
X 182.40   Y 96.15   Z -2.00
Running
Printer — pendulum_bob
completed 11 min ago
Idle
02

Cross-Device Job Monitoring

The machine in the workshop is driven over WebSerial by whatever browser or desktop app is plugged into it — but with Pro that session also posts telemetry to your account. Progress, position, feed rate, spindle speed and errors are readable from any other device you are signed in on, so you can leave a four-hour engrave running and check it from your phone rather than the stool next to it.

Driving the machine is not gated — that works signed out, over WebSerial, as it always has. What Pro adds is being somewhere else while it runs, and keeping the run afterwards.

  • Live status, line progress and XYZ position from laser, CNC and 3D print jobs.
  • Several machines at once, each reporting under its own device and app id.
  • Faults surface as the machine reports them, not when you next walk past.
  • Read-only by design — monitoring never takes control of a running job.
Job history
walnut_tray — 6 mm walnut, 82%, 3 passes
Etch · 14 Mar · 41 min
Completed
enclosure_panels — ALARM:3 at line 4,118
Etch · 12 Mar · stopped at 44%
Error
jig_plate — 12 mm ply, 1.2 mm stepdown
Etch · 9 Mar · 2 h 07 min
Completed
03

Job History & Agent Access

Live telemetry is one row per machine, overwritten several times a second — so without Pro, every finished job is destroyed by the next one. Pro archives each run instead: how long it took, how far it got, the feed and spindle trace, the line an alarm stopped it on, and the material and power it was cut at.

Which means “what did I cut that walnut at in March” becomes a question with an answer — inside the apps, on your history dashboard, or asked of your own AI agent.

  • Every run kept, across every app and every machine on the account.
  • Search by material, job or document — and filter by date.
  • The settings each job was actually cut at, recorded automatically.
  • Jobs a Tekno Box ran on its own are archived too, with no browser attached.
  • A read-only token lets your agent query it over MCP with nothing open. It cannot drive a machine.
04

PhysBox Native

The desktop build of Mesh: a C++20 application running MuJoCo natively against a Dear ImGui interface, with a GPU-accelerated 3D viewport. It is a reimplementation rather than a wrapper — no browser, no WebAssembly, no 4GB heap ceiling — and it shares its data with the web app, so a scene compiled here is byte-for-byte the scene the web app compiles.

  • Native GPU-accelerated viewport — the renderer talks to the driver directly, not through a browser's compositor.
  • 4x multisampled anti-aliasing — the 3D view resolves out of an MSAA buffer, so edges stay clean in both light and dark themes.
  • Everything the Mesh web app does — the CSG/OpenSCAD geometry pipeline, the MJCF compiler, node scripts, aerodynamics, print volumetrics and STL export are all ported term-for-term.
  • The AI copilot in Explain, Generate and Mutate modes, running on the same system prompt as the web app.
  • Native file access and undo — open and save straight from disk; a generated scene rolls back in one Ctrl+Z.
PhysBox Native desktop app showing a double pendulum scene in the 3D viewport with the tool palette and inspector panels
PhysBox Native on the desktop: tool palette, GPU-accelerated 3D viewport and the inspector's print volumetrics, all in one C++20 process.
board-gerbers.zip
board-F_Cu.gtl & board-B_Cu.gbl
Top & bottom copper, RS-274X
Ready
board-Edge_Cuts.gko
Board outline & cutouts
Ready
board.drl
Excellon drill file, by tool diameter
Ready
05

Export to Any Fab House

The web app's route from schematic to copper has always ended at your own CNC — G-code streamed straight over WebSerial to a mill sitting on your bench. Most people designing a board don't own one. Pro adds the other ending: a standard Gerber (RS-274X) and Excellon drill package, zipped in one click, that JLCPCB, PCBWay, OSHPark or any other fab house already knows how to read.

Nothing about milling changes — it's still free, still local, still yours. This is for the board that's too fine-pitch for a mill, needs two-layer plated-through vias, or you'd simply rather have somebody else's fab house make it. The native desktop app already exports Gerber for free, since it has no cloud costs to recover; this is what brings the same export to the browser.

  • Standard RS-274X Gerber layers plus an Excellon drill file — no proprietary format.
  • Copper fill, traces, pads and board outline exported straight from the routed layout.
  • Works with any fab house's upload flow — JLCPCB, PCBWay, OSHPark and others.
  • One click from the PCB export panel, bundled as a single .zip.
Free vs Pro

What changes when you sign in

The simulation engines are identical. Pro adds persistence, telemetry and the native desktop build.

Capability Free (browser) PhysBox Pro
Volt, Mesh, Etch & Flux simulators Full engines Full engines
MCP tooling & AI copilot Included Included
Saving scenes & presets Local browser storage only Cloud saves, synced across devices
Auto-saving the document you are working on Not saved anywhere Auto-saved, with revision history
Driving a machine over WebSerial Full control Full control
Monitoring a running machine Only on the device that is driving it From any signed-in device
History of finished jobs Overwritten by the next run Every run kept, with its settings and trace
Agent access to your workshop history Nothing recorded to read Read-only MCP token
PhysBox Native desktop app Not available Linux & Windows download
Gerber & Excellon export (Volt) Milling via WebSerial only Gerber + drill file, any fab house
Rendering WebGL in a browser tab Native GPU viewport with 4x MSAA
Model size ceiling Capped by the 4GB WASM heap Bounded by your machine's RAM

Perpetual Desktop License — No Ransomware SaaS

Perpetual Fallback

We believe tools you rely on shouldn't expire if your subscription stops. PhysBox Pro uses a transparent perpetual fallback license model: you pay while you want continuous updates and cloud infrastructure, but you own the software you download forever.

While Your License is Active

Unlimited downloads of every new Linux and Windows desktop build as soon as released, automatic updates, cloud preset syncing across web simulators, and live cross-device machine telemetry.

If Your License Ever Lapses

Keep running your downloaded desktop builds forever. Binaries are 100% DRM-free and fully functional offline with no phone-home kill switches. Only cloud sync and new version updates pause.

Download PhysBox Native Sign In

PhysBox Pro is in Early Access. Signing in with Google registers your account — the download page lists the builds available to you.