Murmur: Just speak. Offline speech-to-text.

Turn your voice into text instantly with offline speech-to-text dictation for Windows — private, fast, and fully offline. Murmur is a powerful offline speech-to-text and voice dictation app for Windows, built on the OpenAI Whisper neural network. All voice processing happens entirely on your device. No internet connection, no cloud services, and no audio ever leaves your computer. Designed for productivity and privacy, Murmur lets you dictate text into any application using a single global hotkey. Just press the shortcut, speak naturally, and release — the transcribed text appears instantly at your cursor position so you can keep working without interruption. Murmur works everywhere: IDEs, terminals, browsers, chats, document editors, and enterprise applications. It is especially suited for corporate, offline, and NDA-restricted environments where cloud-based dictation tools are not allowed. Notebook is a PRO Feature Upgrade to PRO to unlock the Notebook feature and transcribe long recordings and files. * Transcribe audio and video files * Long recordings up to 3 hours * Export to TXT, PDF, DOCX, SRT * Unlimited saved transcriptions Key Features 🔒 100% Offline & Private All speech recognition runs locally on your PC. No uploads, no tracking, no telemetry, and no external servers. 🧠 Whisper AI Engine Accurate real-time speech recognition powered by OpenAI Whisper, supporting 99+ languages with automatic language detection. ⚡ High Performance GPU acceleration with NVIDIA CUDA and Vulkan for fast transcription. Automatically falls back to CPU when GPU is unavailable. ⌨️ Global Hotkey Dictation Start and stop dictation instantly from any application using a customizable system-wide hotkey. ✍️ Type Anywhere Transcribed text is automatically inserted into the active window or text field — no copy-paste, no app switching. 🗂 Local Transcription History All transcriptions are stored locally for browsing, editing, copying, and reuse. 🪶 Minimal Interface Clean, lightweight, distraction-free UI designed to stay out of your way while you work. 🔐 Privacy by Design • Audio never leaves your device • All data stored locally • No account or sign-in required • No analytics or tracking Perfect For • Writing emails, documents, and messages • Dictating notes, documentation, and code comments • Developers working in IDEs and terminals • Journalists and writers who value privacy • Accessibility and hands-free typing • Working without internet access • Pr