Forthwith

Forthwith is an AI-powered localization tool built for developers who want to ship their apps in more languages without adding a painful or expensive translation workflow. Run `forthwith translate` from your project, and Forthwith finds new or changed strings, translates them, and writes the results back into your existing localization files. Unlike asking an LLM to translate your apps strings, Forthwith also validates the things that can easily break during translation—placeholders, interpolation variables, plural forms, markup, escaping, and file syntax—before writing changes. Forthwith supports iOS, Android, Flutter, React, React Native, Phoenix, and go-i18n, so localization can stay where it belongs: in your normal development workflow.