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Piper

Local neural text-to-speech engine maintained in the Open Home Foundation voice ecosystem.

Piper converts text to speech locally and documents downloadable voices, command-line use and programming interfaces. Voice models can have their own licences, separate from the engine’s GPL licence.

Official website · Source 1

Piper — official source documentation
Piper — genuine Edge capture of the official raw README (English); source text, not the service homepage or application interface. · OHF-Voice/piper1-gpl contributors · 2026-11-08 · GPL-3.0
SourceLicence

OHF-Voice/piper1-gpl contributors · GPL-3.0 · Unmodified source-document reproduction; original notices and source retained.

Source text

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