--- title: "espeak-ng vs espnet" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/espeak-ng-espeak-ng-vs-espnet-espnet" tools: ["espeak-ng-espeak-ng", "espnet-espnet"] --- # espeak-ng vs espnet *GraphCanon updated Jul 29, 2026* ## Verdict Pick espeak-ng if eSpeak NG: Free text-to-speech engine with over a hundred languages and accents in C under GPL-3.0; pick espnet if eSPNet is an End-to-End Speech Processing Toolkit that employs deep learning models for tasks including speech recognition and synthesis. [espeak-ng](https://github.com/espeak-ng/espeak-ng) reports 6.7k GitHub stars, 1.3k forks, and 594 open issues, last pushed Jul 27, 2026. [espnet](https://espnet.github.io/espnet/) has 9.9k stars, 2.4k forks, and 49 open issues, last pushed Jul 28, 2026. Figures are from public GitHub metadata via [espeak-ng's repository](https://github.com/espeak-ng/espeak-ng) and [espnet's repository](https://github.com/espnet/espnet). | | [espeak-ng](/tools/espeak-ng-espeak-ng.md) | [espnet](/tools/espnet-espnet.md) | | --- | --- | --- | | Tagline | Open source speech synthesizer supporting more than hundred languages and accents | End-to-End Speech Processing Toolkit | | Stars | 6,688 | 9,903 | | Forks | 1,263 | 2,421 | | Open issues | 594 | 49 | | Language | C | Python | | Adopt for | eSpeak NG: Free text-to-speech engine with over a hundred languages and accents in C under GPL-3.0 | ESPNet is an End-to-End Speech Processing Toolkit that employs deep learning models for tasks including speech recognition and synthesis. | | Persona | - | - | | Runtime | - | - | | License | GPL-3.0 | Apache-2.0 | | Categories | Speech & Audio | Model Training, Speech & Audio | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [espeak-ng](/tools/espeak-ng-espeak-ng.md) | [espnet](/tools/espnet-espnet.md) | | --- | --- | --- | | Days since push | 1d | 0d | | Open issues (now) | 594 | 49 | | Full report | [trust report](/tools/espeak-ng-espeak-ng/trust.md) | [trust report](/tools/espnet-espnet/trust.md) | ## Decision facts: espeak-ng - **Adopt for:** eSpeak NG: Free text-to-speech engine with over a hundred languages and accents in C under GPL-3.0 ## Decision facts: espnet - **Adopt for:** ESPNet is an End-to-End Speech Processing Toolkit that employs deep learning models for tasks including speech recognition and synthesis. ## Choose when ### Choose espeak-ng if… - espeak-ng is primarily C; espnet is Python. - License: espeak-ng is GPL-3.0, espnet is Apache-2.0. - Tags unique to espeak-ng: android, espeak, espeak-ng, text-to-speech. - When multilingual support across over a hundred languages is required. ### Choose espnet if… - espnet is primarily Python; espeak-ng is C. - License: espnet is Apache-2.0, espeak-ng is GPL-3.0. - Tags unique to espnet: chainer, deep-learning, kaldi, pytorch. - Also covers Model Training. - When you require comprehensive tools for end-to-end speech processing tasks such as speech recognition, synthesis, translation, and speaker diarization. ## When NOT to use espeak-ng - Avoid if proprietary software development prohibits use of GPL-3.0 licensed tools. - Not ideal if fine-grain control and quality over diverse accents are more important than extensive language coverage. ## When NOT to use espnet - If you are working on tasks unrelated to speech or audio processing, such as computer vision, NLP, or any other deep learning areas outside of ESPNet's focus. - Your development environment is limited to languages other than Python or frameworks that do not support Chainer or PyTorch, which are foundational to espnet. ## Common questions ### What is the difference between espeak-ng and espnet? espeak-ng: Open source speech synthesizer supporting more than hundred languages and accents. espnet: End-to-End Speech Processing Toolkit. See the comparison table for live GitHub stats and shared categories. ### When should I choose espeak-ng over espnet? Choose espeak-ng over espnet when espeak-ng is primarily C; espnet is Python; License: espeak-ng is GPL-3.0, espnet is Apache-2.0; Tags unique to espeak-ng: android, espeak, espeak-ng, text-to-speech; When multilingual support across over a hundred languages is required. ### When should I choose espnet over espeak-ng? Choose espnet over espeak-ng when espnet is primarily Python; espeak-ng is C; License: espnet is Apache-2.0, espeak-ng is GPL-3.0; Tags unique to espnet: chainer, deep-learning, kaldi, pytorch; Also covers Model Training; When you require comprehensive tools for end-to-end speech processing tasks such as speech recognition, synthesis, translation, and speaker diarization. ### When should I avoid espeak-ng? Avoid if proprietary software development prohibits use of GPL-3.0 licensed tools. Not ideal if fine-grain control and quality over diverse accents are more important than extensive language coverage. ### When should I avoid espnet? If you are working on tasks unrelated to speech or audio processing, such as computer vision, NLP, or any other deep learning areas outside of ESPNet's focus. Your development environment is limited to languages other than Python or frameworks that do not support Chainer or PyTorch, which are foundational to espnet. ### Is espeak-ng or espnet more popular on GitHub? espnet has more GitHub stars (9,903 vs 6,688). Stars measure visibility, not whether either tool fits your constraints. ### Are espeak-ng and espnet open source? Yes - both are open-source projects on GitHub (espeak-ng: GPL-3.0, espnet: Apache-2.0). ### Where can I find alternatives to espeak-ng or espnet? GraphCanon lists graph-backed alternatives at [espeak-ng alternatives](/tools/espeak-ng-espeak-ng/alternatives) and [espnet alternatives](/tools/espnet-espnet/alternatives) ([espeak-ng markdown twin](/tools/espeak-ng-espeak-ng/alternatives.md), [espnet markdown twin](/tools/espnet-espnet/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/espeak-ng-espeak-ng-vs-espnet-espnet.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, espeak-ng or espnet? espeak-ng: Very active. espnet: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for espeak-ng and espnet? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [espeak-ng trust report](/tools/espeak-ng-espeak-ng/trust); [espnet trust report](/tools/espnet-espnet/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=espeak-ng-espeak-ng`](/api/graphcanon/graph?tool=espeak-ng-espeak-ng) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_