Whisper
openai/whisper
OpenAI’s open speech-recognition model and Python package for multilingual transcription and translation.
pip install -U openai-whisperOpen-source speech & audio
Open speech-to-text and text-to-speech projects. 6 projects, sorted by GitHub stars.
6 open-source speech & audio
ChatTTS
2noise/ChatTTS
Generative TTS model designed for natural conversational dialogue (English and Chinese).
pip install -r requirements.txt
Chatterbox
resemble-ai/chatterbox
Open-source TTS models from Resemble AI with voice cloning and emotion control.
pip install chatterbox-tts
faster-whisper
SYSTRAN/faster-whisper
Up to several-times-faster Whisper transcription using CTranslate2, on CPU or GPU.
pip install faster-whisper
Podcastfy
souzatharsis/podcastfy
Python tool/API that turns text, URLs, PDFs and videos into multi-speaker AI podcast audio.
Says it is an open-source alternative to NotebookLM's podcast (Audio Overview) feature (from its README)
Install: pip install podcastfy (PyPI per docs).
Kokoro-FastAPI
remsky/Kokoro-FastAPI
Dockerized OpenAI-compatible TTS API for the small Kokoro-82M voice model, CPU or GPU.
docker run -p 8880:8880 ghcr.io/remsky/kokoro-fastapi-cpu:latestStars, licences and last-commit dates come from the GitHub REST API, fetched 17 Oct 2026. Archived repos, repos with no commit in 12 months and non-open licences are excluded. Install commands are copied from each README.