Open-Source Licenses
Last updated: June 6, 2026
Margo is built with the following open-source software.
Translation & speech
- Whisper — MIT — speech recognition (via sherpa-onnx)
- SMALL-100 — MIT — machine translation
- Piper — MIT — text-to-speech
- eSpeak-NG — GPLv3 — long-tail fallback voices
Other
- ML Kit Text Recognition v2 — photo & live OCR
- Azure Cognitive Services Speech & Neural TTS — online speech & voice
- Anthropic Claude / Google Gemini — AI Tutor (beta)
Source & full license text
- Whisper — github.com/openai/whisper
- SMALL-100 — huggingface.co/alirezamsh/small100
- Piper — github.com/rhasspy/piper
- eSpeak-NG — github.com/espeak-ng/espeak-ng
- ML Kit — developers.google.com/ml-kit