Open-source localization platform with AI translation that pulls context automatically from your app's UI.
Tolgee is a localization platform for software teams that combines a translation management system with an AI translator. Its autonomous translation feature reads context automatically extracted from the running application, so translations account for surrounding UI rather than being generated from an isolated string, and results can still route to human reviewers before publishing. It supports multiple LLM providers including OpenAI, Anthropic, and Google Gemini, or a self-hosted model, integrates via a JavaScript SDK, Docker, npm, and GitHub, and ships an MCP server for use from Claude Code, Cursor, or Codex. Tolgee is open source and built by a company based in Brno, Czech Republic, founded in 2021 by Jan Cizmar.
Free cloud plan covers up to 500 keys and 3 seats with AI translation included; lowest paid Team plan is 49 euros/month billed annually, roughly $53 at recent exchange rates, for 2,000 keys and 4 seats.
Use tool ↗Tolgee's pitch is translation quality that improves because the AI actually sees the surrounding app context instead of translating strings in isolation, with a human-review step still in the loop. It's aimed at engineering teams shipping a localized product, not casual one-off document translation.
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