KeyStack App Stores Dev Secrets in macOS Keychain, Ditching Plain-Text .env Files
A solo developer has built KeyStack, a native macOS app designed to replace plain-text .env files by storing environment variables directly in the system Keychain, which is encrypted at rest and protected by Touch ID. The app organises secrets by project and environment, supports importing from existing .env files, and offers a side-by-side diff view to spot missing variables across environments. It also includes rotation reminders with configurable intervals and badge alerts to help developers stay on schedule. KeyStack operates entirely offline with no account, no cloud sync, and no network requests, meaning secrets never leave the user's machine. The tool is intentionally single-user and macOS-only, positioning itself as a local-first alternative to team-oriented secrets managers like Doppler or Infisical.
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