Voicebox

The open-source voice synthesis studio.
Clone voices. Generate speech. Build voice-powered apps.
All running locally on your machine.

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voicebox.sh • Download • Features • API • Roadmap

Voicebox App Screenshot

Click the image above to watch the demo video on voicebox.sh

Voicebox Screenshot 2

Voicebox Screenshot 3

Voicebox is a local-first voice cloning studio with DAW-like features for professional voice synthesis. Think of it as a local, free and open-source alternative to ElevenLabs — download models, clone voices, and generate speech entirely on your machine.

Unlike cloud services that lock your voice data behind subscriptions, Voicebox gives you:

• Complete privacy — models and voice data stay on your machine
• Professional tools — multi-track timeline editor, audio trimming, conversation mixing
• Model flexibility — currently powered by Qwen3-TTS, with support for XTTS, Bark, and other models coming soon
• API-first — use the desktop app or integrate voice synthesis into your own projects
• Native performance — built with Tauri (Rust), not Electron
• Super fast on Mac — MLX backend with native Metal acceleration for 4-5x faster inference on Apple Silicon

Download a voice model, clone any voice from a few seconds of audio, and compose multi-voice projects with studio-grade editing tools. No Python install required, no cloud dependency, no limits.

Voicebox is available now for macOS and Windows.

Linux builds coming soon — Currently blocked by GitHub runner disk space limitations.

Powered by Alibaba's Qwen3-TTS — a breakthrough model that achieves near-perfect voice cloning from just a few seconds of audio.

• Instant cloning — Upload a sample, get a voice profile
• High fidelity — Natural prosody, emotion, and cadence
• Multi-language — English, Chinese, and more coming
• Lightning fast on Mac — MLX backend leverages Apple Silicon's Neural Engine for super fast generation

• Create profiles from audio files or record directly in-app
• Import/Export profiles to share or backup
• Multi-sample support — combine multiple samples for higher quality cloning
• Organize with descriptions and language tags

• Text-to-speech with any cloned voice
• Batch generation for long-form content
• Smart caching — regenerate instantly with voice prompt caching

Create multi-voice narratives, podcasts, and conversations with a timeline-based editor.

• Multi-track composition — arrange multiple voice tracks in a single project
• Inline audio editing — trim and split clips directly in the timeline
• Auto-playback — preview stories with synchronized playhead
• Voice mixing — build conversations with multiple participants

• In-app recording with waveform visualization
• System audio capture — record desktop audio on macOS and Windows
• Automatic transcription powered by Whisper
• Export recordings in multiple formats

• Full history of all generated audio
• Search & filter by voice, text, or date
• Re-generate any past generation with one click

• Local mode — Everything runs on your machine
• Remote mode — Connect to a GPU server on your network
• One-click server — Turn any machine into a Voicebox server

Voicebox exposes a full REST API, so you can integrate voice synthesis into your own apps.

# Generate speech
curl -X POST http://localhost:8000/generate \
 -H "Content-Type: application/json" \
 -d '{"text": "Hello world", "profile_id": "abc123", "language": "en"}'
# List voice profiles
curl http://localhost:8000/profiles
# Create a profile
curl -X POST http://localhost:8000/profiles \
 -H "Content-Type: application/json" \
 -d '{"name": "My Voice", "language": "en"}'

Use cases:

• Game dialogue systems
• Podcast/video production pipelines
• Accessibility tools
• Voice assistants
• Content creation automation

Full API documentation available at http://localhost:8000/docs when running.

Why this stack?

• Tauri over Electron — 10x smaller bundle, native performance, lower memory
• FastAPI — Async Python with automatic OpenAPI schema generation
• Type-safe end-to-end — Generated TypeScript client from OpenAPI spec

Voicebox is the beginning of something bigger. Here's what's coming:

• Voice Design — Create new voices from text descriptions
• Project System — Save and load complex multi-voice sessions
• Plugin Architecture — Extend with custom models and effects
• Mobile Companion — Control Voicebox from your phone

Voicebox aims to be the one-stop shop for everything voice — cloning, synthesis, editing, effects, and beyond.

See CONTRIBUTING.md for detailed setup and contribution guidelines.

Using the Makefile (recommended): Run make help to see all available commands for setup, development, building, and testing.

With Makefile (Unix/macOS/Linux):

# Clone the repo
git clone https://github.com/jamiepine/voicebox.git
cd voicebox
# Setup everything
make setup
# Start development
make dev

Manual setup (all platforms):

# Clone the repo
git clone https://github.com/jamiepine/voicebox.git
cd voicebox
# Install dependencies
bun install
# Install Python dependencies
cd backend && pip install -r requirements.txt && cd ..
# Start development
bun run dev

Prerequisites: Bun, Rust, Python 3.11+. XCode on macOS.

Performance:

• Apple Silicon (M1/M2/M3): Uses MLX backend with native Metal acceleration for 4-5x faster inference
• Windows/Linux/Intel Mac: Uses PyTorch backend (CUDA GPU recommended, CPU supported but slower)

voicebox/
├── app/ # Shared React frontend
├── tauri/ # Desktop app (Tauri + Rust)
├── web/ # Web deployment
├── backend/ # Python FastAPI server
├── landing/ # Marketing website
└── scripts/ # Build & release scripts

Contributions welcome! See CONTRIBUTING.md for guidelines.

1. Fork the repo
2. Create a feature branch
3. Make your changes
4. Submit a PR

Found a security vulnerability? Please report it responsibly. See SECURITY.md for details.

MIT License — see LICENSE for details.

voicebox.sh