Forthwith · Forthwith: Localization automation for developers

Forthwith is a cross-platform localization CLI that finds issues before users do. Run a free, local check—no account, upload, or configuration—to catch missing keys, malformed files, placeholder mismatches, plural gaps, duplicates, and untranslated values. When you’re ready, Forthwith translates only new or changed strings, validates framework-specific structure, and writes reviewable diffs for iOS, Android, Flutter, React Native, React, Phoenix, and go-i18n.

Hi Product Hunt! I built Forthwith to make localization feel like a reliable part of the development workflow instead of a fragile, manual release task. The free `forthwith check` command runs entirely on your machine—no account, upload, or config—and points to concrete problems in your existing localization files. If you want the full workflow, Forthwith detects only new and changed strings, translates them with framework context, validates placeholders, plurals, keys, and structure, then writes a clean diff for review. It works across iOS, Android, Flutter, React Native, React, Phoenix, and go-i18n. I’d love to hear how your team handles localization today, and which framework or workflow you’d like us to support next.