Live SDK Demo
AvailableDetach a counter panel, keep state synced across windows, and reattach.
Terminal - Welcome
Multi-Window UX for the Web
Modulon Engine
Detachable windows, shared state, and layout persistence for web apps. The Popout SDK powers multi-monitor workflows, complex dashboards, and game UIs. v0.5.0 adds recoverable surface sessions, resilient transport fallback, typed protocols, React hooks, and support diagnostics.
Concept
Built around windows, not just scenes.
Modulon treats game UI like a desktop environment. Panels can be arranged, popped out, stacked, and managed, giving players complete control over how they view the game, chat, inventory, and tools.
Detachable Windows
Drag, snap, and rearrange panels like a mini OS inside your browser tab.
Tiny Footprint
Obsessive size discipline. Core engine aims to stay in the low megabytes.
Web-First Stack
Modern browsers, standard tech. No launchers or installs required.
Cubicide-Proven
Real engine features shaped by a real title, Cubicide.
Live SDK Demo
Pop out a panel. Keep state in sync.
A real SDK micro-demo: detach the panel, change the counter, and watch state stay synced across windows.
Counter Panel
Hub: —
0
Ready
Popups are required. The detached panel stays synced via SharedWorker.
Demos
Official demos, refreshed for v0.5.
Older third-party Community Lab prototypes have been retired. We are preparing first-party demos next. Until then, use the live SDK micro-demo and the Operations Console reference app.
More Modulon-built demos will land here as they are ready.
Operations Console
v0.5.0React reference dashboard for detachable panels, transport fallback, session recovery, and support-bundle export.
Products
SDK + add-ons, with more on the way.
Modulon is a product line: a stable SDK for real apps, optional paid add-ons, and a free reference Engine. The Popout SDK, Window Popout Plugin, and Networking add-on are available now. More add-ons ship as they are ready.
Paid • Stable v0.5.0 Available
Modulon Popout SDK
Multi-window Web App SDK: window lifecycle (detach/reattach), local RPC/events, and layout persistence. v0.5.0 ships recoverable surface sessions, automatic opener/SharedWorker/BroadcastChannel resolution, typed runtime-validated protocols, optional React hooks, redacted support bundles, and progressive multi-screen primitives. Same features across paid tiers; pricing is licensing-only.
Live demo · Read docs · 5-minute quickstart · View in store ↗
Paid • Add-on Available
Window Popout Plugin
Turnkey popout UX and integration glue for game engines. Built on top of Modulon Popout SDK for "it just works" detaching behavior.
Paid • Add-on Available
Networking (WebRTC + WebSocket)
P2P + server-mediated messaging adapters for sync + chat patterns. Designed for multi-window and multi-device.
Paid • Add-on In development
Window Manager
Desktop-style in-page windows (drag/resize/z-order) designed to pair with popouts and multi-monitor workflows.
Paid • Add-on In development
Auto-Stretch / Auto-Layout
Smart fit-to-screen + resize behaviors for game panes and tool panels. Great for multi-monitor setups.
Paid • Add-on In development
Autoscaler / Multi-Instance Orchestrator
Orchestration helpers for complex multi-window/multi-instance layouts and session patterns.
Free • Reference In development
Modulon Engine (Reference)
A Cubicide-powered reference stack combining windowing + networking patterns. No guarantees, no SLA; a demo and proving ground.
Roadmap (staged rollout)
- Modulon Popout SDK (foundation): available
- Window Popout Plugin (game engine integration): available
- Networking Add-on: available
- Window Manager: pairs with popouts
- Auto-Stretch / Auto-Layout: UX polish layer
- Autoscaler / Orchestrator: complex setups
- Modulon Engine (Reference): free, ongoing
Items are developed in sequence to keep quality high.
Pricing & Licensing
Licensing-only tiers (SDK + add-ons).
One-time per legal entity. Unlimited seats/devices/projects. Offline use allowed. Paid tiers include the same features within each product; tiers exist for licensing fairness by company revenue.
Add-ons use the same tier structure and are priced below the SDK. See modulon.dev for detailed packaging.
Free is non-commercial evaluation. Paid customers get immediate access to new builds and full version history.
| Product | Free | Indie 1 ≤ $100k |
Indie 2 ≤ $1M |
Studio ≤ $25M |
Enterprise / Public Sector No cap |
|---|---|---|---|---|---|
| Modulon Popout SDK Detach/reattach, local RPC/events, layout persistence, same features across paid tiers |
$0 Non-commercial |
$299 | $999 | $4,999 | $24,999 |
| Window Popout Plugin Unity/Godot/WebGL popout bridge |
$0 Non-commercial |
$149 | $499 | $1,999 | $9,999 |
| Networking (WebRTC + WebSocket) Hybrid P2P + server relay |
$0 Non-commercial |
$199 | $699 | $2,999 | $14,999 |
Redistribution / OEM rights
For companies shipping Modulon as part of a platform sold to many customers: +$25,000–$100,000 depending on scope. Multi-entity (subsidiaries) add-on: +$7,500.
Feature parity promise (SDK)
Paid SDK tiers include the same features. Tiers exist for licensing fairness by company revenue.
Build Status
Shipping the SDK. Building the engine.
The Modulon Popout SDK, Window Popout Plugin, and Networking add-on are available now. The broader engine/reference stack is built and tested alongside Cubicide.
- ✓ Window Manager Prototype
- ✓ Game Integration
- ✓ Public SDK & Docs
- ✓ Window Popout Plugin release
- ✓ Networking add-on release
- ✓ Modulon SDK v0.5.0 (production multi-window runtime)
- ✓ License & Pricing