Martin Kavík

15+ years building the full stack.
From ideas and business requirements to silicon.

Rust & Wasm

Product Design

Open Source

Rust &
WebAssembly

Author of the MoonZoon web framework and Boon — a programming language with a Rust runtime and hardware synthesis.

Product &
UX Design

Design of business software and developer tools, including the NovyWave waveform visualizer.

Developer
Experience

Examples, playgrounds, and clear APIs that make software easy to adopt.

Selected Work

I'm mostly a toolmaker.

Boon

Website GitHub Playground

One language for web apps, CLIs and hardware
Boon is a declarative language where the runtime remembers values across reloads, enabling hot-reloading and state persistence without a database.

Statically typed with a Factorio-inspired visual debugger. Other inspirations described in the blog post The Boon of Dataflow.

Currently powered by a Rust interpreter with a custom lock-free actor-based engine. Exploring Differential Dataflow as an alternative — engines switchable in the Playground.
Related work

MoonZoon — powers Boon Playground and the HTML renderer; its signals and styling influenced Boon’s design

UI Parser — extracts UI metadata from web pages for UI recreation and visual testing in Boon

RayBox — 3D SDF renderer that will render Boon UIs with real depth and lighting

BoonComputer — RISC CPU on FPGA proving Boon describes hardware as naturally as software
language

rust

declarative

persistent

WIP
NovyWave

GitHub

Modern GTKWave alternative

A modern waveform viewer for FPGA and hardware debugging. Combines WebAssembly with Tauri so large captures stay fast while the UI remains portable.

Cross-platform (Linux, macOS, Windows, browser + remote server). Plugin-based architecture. Built with MoonZoon, funded by NLnet Foundation.

waveform

viewer

wasm

fpga

tauri

WIP
MoonZoon

GitHub

Rust fullstack framework

Fullstack Rust without HTML, CSS, or JavaScript. Wasm frontend with signals (no Virtual DOM), native Rust backend. Typed routes and UpMsg/DownMsg for real-time communication. Auto-reload with mzoon CLI. Also works as frontend-only for static hosting.

Boon Playground and NovyWave are built with MoonZoon. It also served as the foundation for a Norwegian bachelor thesis.

MoonZoon history

After maintaining Seed (early Rust frontend framework), I got frustrated with VirtualDOM and Elm-style patterns. Even created Rust React Hooks — with fewer limitations than JS ones — but still didn’t feel right. Writing HTML/CSS almost directly felt worse the more I dealt with CSS interactions and browser inconsistencies — complexity kept growing instead of shrinking.

Signals and simplified styling felt better. Typed messages simplified frontend-backend communication. That became MoonZoon in 2021. Since then I’ve pushed its limits: web workers with shared memory, desktop apps, animations, JS interop — and contributed to wasm-bindgen along the way.

Read more in MoonZoon: Foundations and MoonZoon: 2021–2025.

rust

fullstack

framework

wasm

signals
BoonComputer

RISC CPU on FPGA — designed in Boon, running Boon
Proving Boon can describe hardware as naturally as software — the same language for web apps and CPU architecture.

Roadmap:
1. Write a transpiler from Boon to Verilog for simple circuits
2. Test inside a forked DigitalJS with UART debugging and Wasm Yosys
3. Test on real hardware with peripherals like displays — for fun and confidence
4. Build SuperCounter (web app, server, CLI, FPGA) all in Boon, working together
5. Then the real RISC work begins
Ultimate goal: run Boon in Wasm executed on a CPU designed in Boon.

Future possibility: MRAM integration — instant resume, zero data loss, minimal standby power.
boon

risc

fpga

cpu

hardware

WIP