2 tools, in alphabetical order (this isn't a ranking). Check each tool's commercial-use notes before you ship assets in a game.
| Tool | Free plan | Commercial use | API | MCP |
|---|---|---|---|---|
 Crowdin | Free plan | Commercial use unverified | Available | Official MCP server |
 Gridly | Free trial or credits only | Commercial use unverified | Available | Community server only |
Localisation management platform for translating product strings, with Crowdin AI for translation, context enrichment and proofreading, plus an API and integrations.
Verdict: For managing game text translation with AI assistance; the free plan works for one private project, but free-plan translations feed Crowdin's translation memory.
Content and localisation platform with a game-localisation use case: spreadsheet-style grids for strings, AI translation with linguistic context, AI voiceover files and an API.
Verdict: For teams that want game strings, AI translation and voiceover files in one tool; there is no free plan, only a 14-day trial.