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Syllavox

Free#167 of 222 in Text-to-Speech Software

Syllavox: A privacy-focused offline TTS utility with useful reading and export controls. Ranked #167 of 222 in Text-to-Speech Software by our editors (3.0/10); pricing: Open source; best for privacy-focused offline desktop TTS users.

3.0/10Editor score

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At a glance

Editor score
3.0 / 10
Pricing
Open source
Best for
Privacy-focused offline desktop TTS users
Paid from
Free
Commercial use
Yes
Facts checked
20 Sep 2026

Where it wins
- Local synthesis with Piper, Sherpa-ONNX, and system voices
- Clipboard hotkey reading with sentence and paragraph navigation
- WAV export, browser extensions, and a local HTTP API
Where it doesn't
- Voice models have separate licenses and usage terms
- macOS and Ubuntu-first Linux support are best effort or experimental
- No voice cloning or broader verified voice, language, and format range

Our verdict on Syllavox

Syllavox is an open-source, local-first text-to-speech utility for students and knowledge workers who want desktop reading without sending speech requests to a cloud TTS service. It runs local offline synthesis through installed Piper, Sherpa-ONNX, or operating-system voices. The product combines pasted or selected text reading with global clipboard hotkeys, playback controls, voice management, sentence and paragraph navigation, WAV export, a local HTTP API, and browser context-menu extensions. Windows is the established supported platform, while macOS and Ubuntu-first Linux support are documented as best effort or experimental.

Its strongest fit is a privacy-focused workflow built around local processing. The global clipboard hotkey can read selected content, while pause, resume, stop, volume, and speed controls support extended listening. Sentence and paragraph navigation with replay adds control for reviewing text, and installed voice management keeps available local voices accessible within the application. Browser extensions extend context-menu reading to Chrome, Edge, and Firefox. The local HTTP API also gives developers a way to connect local synthesis to other software without requiring a cloud TTS service.

Syllavox is a focused choice rather than a broad voice-production suite. The published capabilities cover local playback and WAV export, with a maximum input size of 10,000 characters and commercial use listed in the category specifications. Its core software is MIT-licensed, but voice models have separate licenses and terms, so model selection requires attention to those conditions. Choose Syllavox for offline desktop reading, clipboard-based workflows, and local API access. Consider an alternative if you need voice cloning, a wider verified range of voices or languages, or export formats beyond WAV.

Your product? Our editors can test Syllavox in depth and publish a review, labelled as paid · from $149/mo →

Syllavox pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

Syllavox fact sheet

Free plan	Not verified
Paid from	Free
Commercial use	Yes
Voice cloning	Not verified
API access	Yes
Languages	Not verified
Maximum input	10000 characters
Export formats	WAV
Platforms	windows, macos, linux, chrome_extension, api
Deployment	Desktop, Browser extension
Platforms	Windows, macOS, Linux, Chrome extension
Support	Email, Docs, Community
Built for	Solo, Small business (editorial estimate)
Integrations	3 integrations: Local HTTP API, Chrome and Edge browser extensions, Firefox browser extension
Pricing	Open source
Website	github.com
Facts checked	20 Sep 2026

Syllavox integrations

Syllavox lists 3 integrations on its own site.

Local HTTP API
Chrome and Edge browser extensions
Firefox browser extension

Alternatives to Syllavox

See all Syllavox alternatives →

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Featured on iTechGuides

Syllavox is listed in our Text-to-Speech Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update