Freedom251 › Text-to-Speech Software
Syllavox
Facts from Syllavox's own pages
- API access
- Yes · github.com, 20 Sept 2026
- Browser integration
- The browser extension adds a context-menu action to read selected text through the running Syllavox application on the same computer. · github.com, 13 Oct 2026
- Clipboard hotkey
- The default global read shortcut is Ctrl+Alt+R and reads the current clipboard text. · github.com, 13 Oct 2026
- Commercial use
- Yes · github.com, 20 Sept 2026
- Export formats
- WAV · github.com, 20 Sept 2026
- Extension availability
- Chrome and Edge packages are ready for store submission, while Firefox is experimental and store installation awaits external review. · github.com, 13 Oct 2026
- License
- The source code is released under the MIT License. · github.com, 13 Oct 2026
- Limits
- The default maximum synthesis-unit length is 10,000 characters, configurable from 100 to 10,000, and new speech requests interrupt current playback. · github.com, 13 Oct 2026
- Local API
- A local HTTP API listens at 127.0.0.1:8765 and supports status, speak, stop, pause, resume, and voice endpoints. · github.com, 13 Oct 2026
- Local processing
- Speech synthesis and playback run on the computer without a cloud TTS service or account. · github.com, 12 Oct 2026
- Maximum input
- 10000 · github.com, 20 Sept 2026
- Offline speech
- Speech synthesis and playback run on the user's computer without a cloud TTS service or account. · github.com, 13 Oct 2026
- Platforms
- Windows 10/11 x64 is supported; macOS Apple silicon and Ubuntu 22.04/24.04 amd64 are best effort, while other listed targets are experimental. · github.com, 12 Oct 2026
- Platform support
- Windows 10/11 x64 is supported; macOS Apple silicon and Ubuntu 22.04/24.04 amd64 are best effort, with other listed targets experimental. · github.com, 13 Oct 2026
- Playback limitation
- Independent hotkey, browser, or API speech requests interrupt current playback because Syllavox does not queue them. · github.com, 12 Oct 2026
- Privacy
- The browser extension communicates with the local application, and voice downloads occur when the user explicitly installs a voice. · github.com, 13 Oct 2026
- Product
- Syllavox is a local-first read-aloud desktop utility for students and knowledge workers who listen across applications. · github.com, 12 Oct 2026
- Purpose
- Syllavox is a local-first desktop read-aloud utility for listening to text across applications using a shortcut. · github.com, 13 Oct 2026
- Reading controls
- The main window supports sentence and paragraph navigation, replay, pause, resume, stop, playback speed and volume controls, and WAV export. · github.com, 13 Oct 2026
- Release limitation
- The v1.0.0 release does not include an automatic updater, and some platform release checks remain manual. · github.com, 12 Oct 2026
- Security
- The security policy says the project is a small side project, response times cannot be guaranteed, and security reports will be reviewed as soon as practical. · github.com, 12 Oct 2026
- Speech engines
- Piper is the default speech backend; optional builds can add Sherpa-ONNX or operating-system voices. · github.com, 13 Oct 2026
- Support
- The project says it is a small side project and cannot guarantee security-report response times; it lists [email protected] for questions and support. · github.com, 13 Oct 2026
- Voice downloads
- Voice models are not included in public downloads and must be selected and downloaded separately. · github.com, 13 Oct 2026
Where Syllavox stands on Freedom251
- Text-to-Speech Software#128 of 223
- Text-to-speech tools#139 of 232