Your voice never leaves your laptop.
Most dictation tools stream your microphone to someone else's servers. Murmur doesn't. Transcription and the AI cleanup pass both run locally — so the most personal data you produce all day stays on the one machine you control.
Whisper runs on your CPU or GPU. Audio is transcribed in memory and discarded — never written to disk, never sent anywhere.
No sign-up, no sync, no telemetry, no background phone-home. Download it, grant mic access, and start talking.
Every line is auditable on GitHub. MIT-licensed and free — no trial, no seat count, no paywall waiting at the end.
From instant
to flawless.
Murmur ships every OpenAI Whisper size. Pick the one that fits your machine — smaller is faster, larger is sharper. They all run entirely on-device.
A quiet home for everything you've said.
Beyond the floating overlay, Murmur is a full desktop app — history, stats and every setting — native on macOS, Windows and Linux.