LibreTranslate

LibreTranslate is a free and open-source machine translation service that provides an API for translating text between supported languages. Designed to be easy to set up, it can be downloaded and run offline, allowing users to host their own API server rather than relying solely on a hosted service. The project describes launching a server in just a few minutes and offers API documentation and a way to obtain an API key.

The service supports a range of languages, including English, Spanish, French, German, Portuguese, Chinese, Japanese, Korean, Turkish, Ukrainian, and others. LibreTranslate is powered by Argos Translate and released under the AGPLv3 license. The project is presented as a community effort by LibreTranslate contributors, with its current version identified as 1.9.6. Its focus is accessible, self-hostable machine translation for users and developers who want to integrate translation capabilities into applications or operate a translation API themselves.