# LibreTranslate/LibreTranslate

Free and Open Source Machine Translation API. Self-hosted, offline capable and easy to setup.

Repository: https://github.com/LibreTranslate/LibreTranslate
Canonical: https://ross.abutalabs.com/products/libretranslate
Homepage: https://libretranslate.com
Language: Python
License: AGPL-3.0
License Family: copyleft
Topics: translation, translate, api, machine, translator
Last push: 2026-08-23T22:47:34+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 86, longevity 100
- inputs: {"age_days": 2083, "days_push": 10, "days_rel": 99, "gap_med": 17, "n_releases_24m": 18}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 16136, forks 1665 (observed 2026-08-28T04:11:14.825039+00:00)

## What it is
LibreTranslate is a free and open source machine translation API that is fully self-hosted and offline capable, powered by the Argos Translate engine. It exposes a simple REST endpoint for translating text and files without relying on proprietary services like Google or Azure.

## Use cases
- self-host a translation API without proprietary services
- translate text between languages offline
- add machine translation to an application via REST API
- translate documents and files programmatically
- detect the source language of text
- run a private translation server for privacy-sensitive content

## When to choose
- you need translation without sending data to Google, Azure, or other proprietary APIs
- you want an offline or air-gapped translation solution
- you need a simple REST API you can self-host with pip or Docker
- privacy or data sovereignty rules prohibit third-party translation services

## When to avoid
- you need the highest translation quality available from large commercial models
- you want a managed service without running your own infrastructure (though hosted API keys exist)
- you need very high throughput translation on limited hardware
- you need translation for rare language pairs not covered by Argos models

## Facets
- artifact type: service
- maturity: stable
- function: machine-learning, nlp, http-server, api-framework, self-hosted
- domain: artificial-intelligence, self-hosted, apis
- platform: python, self-hosted, cross-platform
- tags: machine-translation, translation-api, offline-translation, argos-translate, language-detection, rest-api, natural-language-processing, localization, docker, web-server

## Member repositories
- LibreTranslate/LibreTranslate (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:14.825039+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 2026-08-29T17:05:13.603820+00:00, confidence not recorded.
  - readme: https://github.com/LibreTranslate/LibreTranslate (fetched 2026-08-28T04:11:14.825039+00:00, sha d433462c87a9)
  - homepage: https://libretranslate.com (fetched 2026-08-29T08:02:53.532719+00:00, sha 36bdbc91dd60)
  - site_page: https://docs.libretranslate.com (fetched 2026-08-29T08:02:53.536360+00:00, sha 932cc3f4b6c2)
  - registry_pypi: https://pypi.org/pypi/libretranslate/json (fetched 2026-08-29T08:02:53.538196+00:00, sha 01dae1806e14)
- Data as of 2026-08-30T08:39:29.467469+00:00.