Self-hosted & open
Lantern is a self-hosted platform for managing translation keys across languages — with an editor, import/export, a read/write API, and a CLI. Keep your strings in one place and pull them into every app.
Manage translation keys across every language in one grid, with status tracking, comments, and a project glossary for consistent terms.
Add locales as you grow. Each key tracks per-language status — untranslated, translated, reviewed — so nothing slips through.
Round-trip your strings as JSON, CSV, or XLSX. Bring existing translations in, hand a spreadsheet to a translator, export the result.
Pull finished translations straight into your app over a simple token-scoped REST API — flat or nested JSON, per-locale or all at once.
A dependency-free CLI pulls and pushes translations in CI. An MCP server lets AI agents read and update a project with scoped tokens.
Invite collaborators to an organization, assign built-in or custom roles, and gate every capability with a single permission system.
Create an account and a project, add your languages, and pull the results into your app through the API.