zentra

Voice to text. Free. Instant. Yours.

The free, open-source alternative to Wispr Flow and Willow.
Press your hotkey → speak → text appears wherever you're typing.
No subscription. No cloud. No limits.

_{🍎 macOS · 🐧 Linux — coming soon}

Demo

Press Ctrl+Shift+Space → speak for 5 seconds → text appears in VS Code, Notion, Chrome, Discord — anywhere.

Why Zentra?

	Zentra	Wispr Flow	Willow
Price	Free forever	$10/mo	Free (limited)
Open Source	✅	❌	❌
Auto-paste	✅	✅	✅
Works offline	✅ VOSK	❌	❌
Custom hotkey	✅	✅	✅
Dashboard + History	✅	✅	❌
No tracking	✅	❌	❌
Transcription speed	~5–10s	~3s	~2s

Features

• 🎙 Instant voice capture — Global hotkey starts recording immediately
• ⚡ Ultra-fast transcription — Groq API (Whisper large-v3) at ~300ms latency
• 📋 Auto-paste — Text appears where your cursor is, no Ctrl+V needed
• 🔒 Private by default — API key stored locally, no cloud sync, no telemetry
• 📡 Offline fallback — VOSK local model when no internet available
• 🎨 Minimal floating UI — Glass morphism bar stays out of your way
• 📊 Dashboard — Track words dictated, minutes saved, full transcription history
• ⚙️ Zero-code setup — Guided wizard, no .env editing required
• 🆓 Free Groq API — No credit card needed, generous free tier
• 🌐 Multi-language — Portuguese, English, and auto-detect

Screenshots

_{The floating bar — minimal, always-on-top, glass morphism}

_{First-run setup wizard — configure in under 2 minutes}

_{Dashboard — transcription history, stats, settings}

How It Works

flowchart LR
    A([🎙 Hotkey pressed]) --> B[Audio capture\ncpal + VAD Silero]
    B --> C{Internet?}
    C -->|Yes| D[Groq API\nWhisper large-v3\n~300ms latency]
    C -->|No| E[VOSK local\nOffline fallback]
    D --> F[Clean transcript\nNo timestamps]
    E --> F
    F --> G[Copy to clipboard]
    G --> H{Field focused?}
    H -->|Yes| I([✓ Auto-pasted!\nText appears instantly])
    H -->|No| J([✓ Copied!\nCtrl+V to paste])

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flowchart TD
    subgraph Frontend [React + Tailwind]
        A[FloatingBar] --> B[Waveform]
        A --> C[ModeToggle]
        A --> D[Toast]
        E[SetupWizard] --> F[4 Steps]
        G[Dashboard] --> H[History]
        G --> I[Stats]
        G --> J[Settings]
    end
    subgraph Backend [Rust + Tauri]
        K[Audio Capture] --> L[VAD Silero]
        L --> M[Session Stitcher\n59s segments]
        M --> N[Failover Orchestrator]
        N --> O[Groq STT]
        N --> P[VOSK Local]
        N --> Q[ElevenLabs]
        R[Auto-Paste\nSendInput API]
        S[Config Store\nAppData/zentra]
    end
    Frontend <-->|Tauri IPC| Backend

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Getting Started

Option 1 — Install (Recommended)

1. Download the installer from Releases
2. Run Zentra_1.0.2_x64-setup.exe
3. Follow the setup wizard (2 minutes):
   • Enter your name
   • Get your free Groq API key (no credit card)
   • Choose your hotkey (default: Ctrl+Shift+Space)
   • Test your microphone
4. Start dictating anywhere 🎙

Option 2 — Build from Source

Prerequisites:

• Node.js 18+
• Rust (latest stable)
• Windows 10/11 (for production build)

# Clone the repository
git clone https://github.com/DaviBonetto/zentra.git
cd zentra

# Install dependencies
npm install

# Create your .env file
cp .env.example .env
# Add your GROQ_API_KEY to .env

# Run in development mode
npm run tauri:dev

# Build for production
npm run tauri:build

Get your free Groq API key:

1. Go to console.groq.com
2. Create a free account (no credit card required)
3. Generate an API key
4. Paste it in the Zentra setup wizard

Roadmap

v1.0.2 — Current ✅

• Floating bar UI with glass morphism
• Groq API transcription (~5–10s)
• Auto-paste via Windows SendInput
• VOSK offline fallback
• Setup wizard with API key validation
• Dashboard with transcription history
• System tray integration
• Configurable hotkey

v1.1.0 — Coming Soon 🔜

• macOS support
• Linux support
• Transcription preview before paste (edit before sending)
• Export history (CSV/TXT)
• Custom vocabulary / dictionary

v2.0.0 — Future 🚀

• AI Prompt Mode — Transform speech into structured prompts for ChatGPT/Claude
• Multiple STT model options (Whisper small/medium/large)
• OpenAI API support
• Real-time transcription (streaming)
• Browser extension
• Team/workspace features

Contributing

Contributions are very welcome! Zentra is built by the community, for the community.

Ways to contribute:

• 🐛 Report bugs
• 💡 Request features
• 🔧 Submit pull requests
• ⭐ Star the repository to help others discover it
• 🌍 Add translations

See CONTRIBUTING.md for detailed guidelines.

Quick contribution guide:

# Fork and clone
git clone https://github.com/YOUR_USERNAME/zentra.git

# Create a feature branch
git checkout -b feat/your-feature-name

# Make your changes and test
npm run tauri:dev

# Commit using conventional commits
git commit -m "feat: add your feature description"

# Push and open a PR
git push origin feat/your-feature-name

Star History

Star History

License

MIT © Davi Bonetto

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_{Built with ❤️ by Davi Bonetto}

_{If Zentra saves you time, consider giving it a ⭐}