Open source: Voice and TTS

Speech to text and text to speech that you can run locally.

whisper.cppggml-org/whisper.cpp
Offline transcription on modest hardware, or inside your own app.
- ★ 54,425
- MIT
- Last commit 12 Oct 2026
- Moderate to self-host
Chatterboxresemble-ai/chatterbox
Generating voiceover locally, as long as you have the rights to any voice you clone.
- ★ 26,989
- MIT
- Last commit 21 Jul 2026
- Moderate to self-host
faster-whisperSYSTRAN/faster-whisper
Transcribing recordings, podcasts or calls on your own machine.
- ★ 25,883
- MIT
- Last commit 15 Oct 2026
- Moderate to self-host
PiperOHF-Voice/piper1-gpl
Offline speech for home automation, assistants or accessibility tools.
- ★ 5,887
- GPL-3.0
- Last commit 15 Oct 2026
- Easy to self-host

Other categories

Agents and frameworks · Local LLMs · Workflow automation · RAG and vector databases · Image and video · Dev tools

Stars, licences and commit dates come from the GitHub API, checked 16 Oct 2026. "Last commit" is the last push to the repo. Star counts are a rough popularity signal, not a quality score. There are no affiliate links in this section: links go straight to each project.