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self-host machine translation without depending on proprietary translation APIs

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Stars
16,946
Primary language
Python
License
AGPL-3.0
Repository last updated
Sep 28, 2026
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Overview

LibreTranslate is a free and open-source machine-translation API powered by Argos Translate. Applications can call it through REST, while models and runtime can remain on infrastructure you control for offline-capable operation.

Features and best fit

Based on official documentation; not hands-on tested · Content checked:

Key features

Expose machine translation through a REST API

Applications submit source and target languages plus text and receive translations through a simple API interface.

Sources: [2]

Run translation locally with Argos Translate

The translation engine does not require Google, Azure, or another proprietary translation backend and can operate on self-hosted infrastructure.

Sources: [2]

Best fit

Fits workloads that should not send translation data to an external SaaS

It is useful for applications and internal tools that need translation requests to stay inside a controlled network or infrastructure boundary.

Sources: [2]

Before adoption

Evaluate resource use and quality per model

Language coverage and translation quality depend on the available Argos models, and storing several models increases storage and memory requirements.

Sources: [2][4]

Software licensing and trademark rules are separate

The code is AGPLv3, while TRADEMARK.md separately governs use of the project name and branding.

Sources: [3][5]

Official sources

  1. [1]LibreTranslate/LibreTranslate repository(2026-09-30)
  2. [2]LibreTranslate README(2026-09-30)
  3. [3]LibreTranslate AGPL-3.0 license(2026-09-30)
  4. [4]LibreTranslate v1.9.6 release(2026-09-30)
  5. [5]LibreTranslate trademark guidelines(2026-09-30)
Supplemental curator note

LibreTranslate is an AGPLv3 machine-translation API powered by Argos Translate without requiring proprietary translation services such as Google or Azure. It can run self-hosted and offline, but model storage, memory use, language coverage, and translation quality should be evaluated for each workload. Separate trademark guidelines apply to names and branding.

Try it in 3 steps

  1. 1

    Get the source

    git clone --depth 1 https://github.com/LibreTranslate/LibreTranslate.git
  2. 2

    Enter the repository

    cd LibreTranslate
  3. 3

    Check the official steps

    Continue with the commands in the README Installation, Quick Start, or Getting Started section.

    find . -maxdepth 1 -iname 'README*' -exec sed -n '1,220p' {} \; -quit
Check the official README

Growth

Growth trends · Last 30 days

16,946 Stars

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GitHub data

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GitHub Topics

  • api
  • machine
  • translate
  • translation
  • translator
Stars
16,946
Forks
1,753
Watchers
112
Open issues
126
Owner type
Organization
Primary language
Python
License
AGPL-3.0
Repository last updated
Sep 28, 2026
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