# zzmp/juliusjs

A speech recognition library for the web

Repository: https://github.com/zzmp/juliusjs
Canonical: https://ross.abutalabs.com/products/juliusjs
Homepage: https://zzmp.github.io/juliusjs
Language: JavaScript
License: NOASSERTION
License Family: other
Last push: 2024-04-19T10:52:36+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4437, "days_push": 866, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2565, forks 174 (observed 2026-08-28T04:07:01.140386+00:00)

## What it is
JuliusJS is a JavaScript port of the Julius speech recognition engine that runs entirely in the browser via a Web Worker. It transcribes user speech in real time through a callback API, with support for custom recognition grammars and no external server calls.

## Use cases
- add speech recognition to a web page
- transcribe voice input in the browser
- build a voice-controlled web app
- recognize spoken commands without a server
- run speech-to-text offline in JavaScript

## When to choose
- you need in-browser speech recognition with no server dependency
- you want a limited, custom grammar of commands rather than open-ended dictation
- you prefer a simple event-based API

## When to avoid
- you need high-accuracy large-vocabulary dictation
- you need mobile/native platform support
- you want an actively developed solution with modern Web Speech API integration

## Facets
- artifact type: library
- maturity: maintenance
- function: speech-recognition, audio-processing
- domain: speech-processing, web-development
- platform: browser
- tags: speech-to-text, web-workers, emscripten, julius, real-time-transcription, voice-recognition, natural-language-processing, javascript, web-server

## Member repositories
- zzmp/juliusjs (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:01.140386+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:23:27.108517+00:00, confidence not recorded.
  - readme: https://github.com/zzmp/juliusjs (fetched 2026-08-28T04:07:01.140386+00:00, sha 68fb9fc2dc95)
  - homepage: https://zzmp.github.io/juliusjs (fetched 2026-08-29T10:06:08.439630+00:00, sha 16d1713a14a8)
- Data as of 2026-08-30T08:39:29.467469+00:00.