A modern VHDL simulator.

Simulate and visualize waveforms in your browser, on your desktop, or headless via CLI.

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How it works

01

Write VHDL

Write your hardware description in your favorite editor.

02

Simulate

Run simulations instantly. The core is written in Rust for speed.

03

View waveforms

Inspect signals with the integrated waveform viewer. Zoom, pan, and measure.

Use it your way

Web

No install required. Open the app in your browser and start simulating immediately.

Desktop

Native app for macOS, Windows, and Linux. Works offline with better performance.

CLI

Run headless simulations and output VCD files for use with GTKWave or Surfer.