TranslateLocally is an open-source desktop application that performs neural machine translation entirely on your computer using Bergamot/Mozilla translation models. No text is ever sent to a server. It supports Windows, macOS, and Linux, and integrates with Firefox and Chrome through a browser extension for in-page translation.
TranslateLocally
translatelocally.com
Running translation models locally is a genuine privacy guarantee rather than a policy promise: if text never leaves your device, it cannot be logged or mined. The Bergamot engine produces quality that holds up well for the languages it covers, particularly European language pairs. The catch is coverage: the model library is narrower than a cloud service, so if you regularly translate between less-resourced languages you may find gaps. It is the right tool for anyone who translates sensitive documents and cannot accept text leaving their machine, and for privacy-conscious developers who want a local translation API.
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Do almost anything: use, change, and ship it, even inside closed-source products. The only condition is keeping the copyright notice.
Permits
- Commercial use
- Modification
- Distribution
- Private use
Requires
- License and copyright notice
Does not provide
- Liability cover
- Warranty
Why it matters: Permissive licensing lets anyone reuse this, including inside closed products. That is freedom to build on, but no guarantee that downstream copies stay open.
Plain-language summary of the project's license, not legal advice. Read the full text for the exact terms.