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OpenTTS

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OpenTTS

Free

open-source software · self-hosted Docker server

Every plan, in full

On the record

API access
Yesgithub.com · read 20 Sep 2026
Audio cache
An optional WAV cache can store generated audio in a temporary container directory or a specified mounted directory.github.com · read 12 Oct 2026
Commercial use
Yesgithub.com · read 20 Sep 2026
Deployment
The README runs OpenTTS as a Docker container and provides language-specific images, including an all-languages image.github.com · read 12 Oct 2026
Export formats
WAVgithub.com · read 20 Sep 2026
HTTP API
The API provides text-to-WAV, voice-listing, and language-listing endpoints.github.com · read 12 Oct 2026
Integration
OpenTTS documents a MaryTTS-compatible endpoint that can act as a drop-in replacement for MaryTTS.github.com · read 12 Oct 2026
License
The repository provides the software under the MIT License.github.com · read 12 Oct 2026
Linux architectures
Its build instructions show Docker images for linux/amd64, linux/arm64, and linux/arm/v7.github.com · read 12 Oct 2026
Maintenance
GitHub says the repository was archived by its owner on October 6, 2025, and is read-only.github.com · read 12 Oct 2026
Purpose
OpenTTS unifies access to multiple open-source text-to-speech systems and voices for many languages.github.com · read 12 Oct 2026
Security
GitHub reports that the project has no security policy file and no published security advisories.github.com · read 12 Oct 2026
Speech markup
It supports a subset of SSML, including voice changes, language settings, pauses, and text substitutions.github.com · read 12 Oct 2026
Support
The repository page links to issues for project discussion and tracking.github.com · read 12 Oct 2026
Voice engines
The listed systems include Larynx, Glow-Speak, Coqui-TTS, nanoTTS, MaryTTS, flite, Festival, and eSpeak.github.com · read 12 Oct 2026
Voice quality
Larynx and Glow-Speak voices offer high, medium, and low quality settings, and the README notes lower quality may improve Raspberry Pi response times.github.com · read 12 Oct 2026

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