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Piper vs MeloTTS: catalog facts
Piper	MeloTTS
Free Free and open source under the GPL.	Free Free and open source.
Windows, macOS, Linux, Command line	Linux, Self-hosted, Command line
Fast enough for low-power hardware like a Raspberry Pi Fully local speech output with no cloud dependency	Several English accents plus five other languages Runs locally with a Dockerfile provided
No graphical interface; aimed at command-line and integration use Voice quality depends on the chosen voice model	No voice cloning Requires Python or Docker setup
Downloadable app	Downloadable app, Self-hosted
Open source	Open source
License: GPL-3.0	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 26, 2026

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