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Speech Note vs Speed of Sound: catalog facts
Speech Note	Speed of Sound
Free Free and open source under the Mozilla Public License 2.0.	Free Free and open source under the MIT licence; cloud LLM polishing uses your own provider.
Linux	Linux
Speech recognition, speech synthesis and translation all run offline Wide choice of engines, including Whisper, Piper and Kokoro	Offline transcription with Whisper, Parakeet and Canary models Types into any app on X11 and Wayland
Linux and Sailfish OS only Models must be downloaded separately and can be large	Linux only Accuracy depends on the model you download and your hardware
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.