Yes — GPLv3, free and open source. Web app, desktop app, and VST3 are all free with no accounts.

Neural Amp Modeler — an open-source neural network that captures real amps/pedals. OpenAxe runs NAMCore natively in C++ (and via WASM in the browser).

Do I need to install anything to try it?

No — open the web app at openaxe.pages.dev and play. Desktop and VST are optional.

Free & open source · GPLv3

A guitar rig that lives everywhere you play.

Amp + cab + 10 effects in a modular 3×8 grid, built on Neural Amp Modeler. Web app in your browser, native desktop app, and VST3/CLAP/AU in your DAW — one C++ engine, no latency tricks.

↗ Open web app — no install ⬇ Download desktop ☆ Star on GitHub

No accounts. No telemetry. Your rigs stay in IndexedDB / on disk.

Input → [IN] → AMP (NAM) → CAB (IR) → GATE → COMP → EQ → CHORUS → DELAY → REVERB → [OUT] → Master
3 rows × 8 columns · drag to move · cable to connect · one engine

 Amp:   NeuralAmpModelerCore — any .nam capture
 Cab:   zero-latency partitioned convolver (IR .wav)
 Effects: Dragonfly Reverb · DSPark · BYOD · Airwindows

Engine: openaxe_core — zero added latency 48 kHz · 128 frames

Everything a rig needs — one graph

OpenAxe converges on all logic in packages/core (DSP, routing, param ranges, model/IR loading). Front ends own only presentation + device integration — so web, desktop, and VST behave identically.

AMP — NAM captures

Any .nam — amps, pedals, outboard. Same NamAmp inference everywhere (WASM worklet on web, direct C++ on desktop/VST).

Tone stack + slim_size for slimmable captures
Per-block I/O trims & bypass
Tone3000 catalog integration

Effects — 10, best-in-class

Gate · Compressor · EQ · Chorus · Flanger · Phaser · Tremolo · Delay · Ping-Pong · Reverb (Dragonfly hall/room/plate/early).

Engine-generic mix for 7 wet effects
Reverb expert mode + native DSP mixes
Metering from core (peak per block)

Cab — IR convolution

Zero-latency partitioned convolver + wav.cpp decode/resample. Hand the core bytes — no Web Audio decode on native.

ir_mix + IR .wav loading
Mixer / Splitter utilities
Master bus level & mute

One engine, four shells

Every front end talks to the same extern "C" ABI (packages/core/include/openaxe/api.h). Same routing, same params, same sound.

Live

Web

Vite + React + AudioWorklet + WASM. ~15 ms round-trip. PWA offline planned.

Live

Desktop

C++ + webview.h + JUCE audio_devices. <5 ms. Reuses web UI, calls core directly.

Beta

VST3 / CLAP / AU

iPlug2 + packages/core (WHOLE_ARCHIVE). Zero latency to report to host.

Planned

iOS / Android

SwiftUI / Compose + C++ via ObjC++ / JNI. Direct audio, no JS bridge.

Design tokens are the single source (packages/ui/tokens/design-tokens.json → CSS + packages/vst3/generated/tokens.h). Carbon / Aluminum finishes in this landing are the same tokens the app ships.

Download

Every v* tag publishes installers via GitHub Releases. The web app needs no download — open it in your browser.

Loading releases…

Enable JavaScript to see live download buttons, or browse releases on GitHub.

Free & open — forever

GPLv3. No accounts, no paywalls. Vendored DSP: Dragonfly (GPLv3), NAMCore (MIT), DSPark, BYOD, Airwindows, ChowPhaser. iPlug2 is MIT.

Contribute

Start with AGENTS.md → CONTRIBUTING.md → ARCHITECTURE.md.

Good first issues · DCO sign-off

Design system

Tokens in design-tokens.json generate CSS + C++ tokens.h. Primitives: Knob · Fader · Led · Meter · Toggle · Panel.

packages/ui · Storybook

Cite & sponsor

CITATION.cff for academic use. Sponsor via FUNDING.yml.

CITATION.cff · Sponsor