Your voice, your machine, your data. murmur runs entirely on-device — no cloud, no accounts, no audio ever leaves your computer.
curl -sSf https://raw.githubusercontent.com/jafreck/murmur/main/scripts/install.sh | bash
Fast, private, and works everywhere you type.
Audio is transcribed on-device and discarded immediately. Zero network requests. Your voice data never leaves your machine.
Optimized inference with Metal, CUDA, and Vulkan GPU acceleration. INT4/INT8 quantized models for faster speed with minimal accuracy loss.
Native support for macOS, Windows, and Linux (X11 & Wayland). Runs as a system tray daemon that starts at login.
Text appears wherever your cursor is — browsers, editors, terminals, chat apps. Uses clipboard paste for universal compatibility.
Choose your hotkey, model size, language, and dictation mode. Simple JSON config with sensible defaults.
Multiple ASR engines to choose from — up to 90+ languages with Whisper, highest accuracy with Qwen3-ASR, or fast formatted English with Parakeet.
murmur detects the active application and adjusts formatting — Markdown in editors, plain text in chat, and more.
murmur supports multiple ASR backends — all running locally on your machine. Models are downloaded from HuggingFace on first run.
| Model | Size | WER | Streaming | Best For |
|---|---|---|---|---|
0.6b (INT4) | ~2 GB | 5.16% | ✅ Native | Fast, accurate (default) |
1.7b (INT4) | ~4 GB | 4.20% | ✅ Native | Lowest error rate |
| Model | Size | Speed | Best For |
|---|---|---|---|
tiny.en | 75 MB | Fastest | Quick notes |
base.en | 142 MB | Fast | Lightweight English |
large-v3-turbo | 1.6 GB | Moderate | 90+ languages |
| Model | Size | Speed | Best For |
|---|---|---|---|
0.6b-v2 (INT8) | ~500 MB | Fast | English with auto-punctuation |
Native support with GPU acceleration where available.
Metal GPU acceleration on Apple Silicon. Globe key as default hotkey.
CUDA & Vulkan GPU support. Installs as a background service.
X11 and Wayland. CUDA & Vulkan GPU acceleration.
Pre-built binaries, no build tools required.