Get started

NumaSim runs entirely in your browser — there's nothing to install. Open the app, drop components on the canvas, wire them up, and click Run.

Open the app

Visit www.numasim.com. The simulator (WebAssembly) and the editor share the same page; everything runs locally in your browser tab.

What you see

When the app loads you have:

• The canvas — an infinite grid where you place and wire components.
• The component palette — a searchable list of every available component, grouped by category. See the Components reference for full details on each one.
• The toolbar — Run / Stop, undo / redo, file operations, and the menu that opens this docs site.
• The scope panel — slides up from the bottom when you have traces to display.

Next steps

• Your first circuit — wire a voltage divider in under a minute.
• Saving and loading — circuits are plain JSON files you can store anywhere.
• Sample circuits — open one in the app and start exploring.