Project S.A.T.U.R.D.A.Y. – open-source, self hosted, J.A.R.V.I.S.
Welcome to Project S.A.T.U.R.D.A.Y. This is a project that allows anyone to easily build their own self-hosted J.A.R.V.I.S-like voice assistant. In my mind vocal computing is the future of human-computer interaction and by open sourcing this code I hope to expedite us on that path. I have had a blast working on this so far and I'm excited to continue to build with it. It uses whisper.cpp [1], Coqui TTS [2] and OpenAI [3] to do speech-to-text, text-to-text and text-to-speech inference all 100% locally (except for text-to-text). In the future I plan to swap out OpenAI for llama.cpp [4]. It is…
Project S.A.T.U.R.D.A.Y. – open-source, self hosted, J.A.R.V.I.S. launched on July 2, 2023 with 121 votes, #420 of 4,347 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
Project S.A.T.U.R.D.A.Y. is an open-source, self-hosted voice assistant that users can build themselves. It performs speech-to-text using whisper.cpp, text-to-text with OpenAI, and text-to-speech with Coqui TTS, all running locally except for the language model component. Built on WebRTC, it works without relying on native or third-party APIs. The project aims to serve as a toolbox for vocal computing applications and plans to eventually replace OpenAI with llama.cpp for fully local operation.
written from the facts on this page · September 2026
From the sources
A toolbox for working with WebRTC, Audio and AI. Contribute to GRVYDEV/S.A.T.U.R.D.A.Y development by creating an account on GitHub.
In the maker’s words, at launch
Welcome to Project S.A.T.U.R.D.A.Y. This is a project that allows anyone to easily build their own self-hosted J.A.R.V.I.S-like voice assistant. In my mind vocal computing is the future of human-computer interaction and by open sourcing this code I hope to expedite us on that path. I have had a blast working on this…
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Project S.A.T.U.R.D.A.Y2023 · github.com · ▲2An open source, self hosted, J.A.R.V.I.S-like assistant
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